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Darkness Falls

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"Now, ten thousand years of darkness begins."
Unalaq to Korra, Mako and Bolin.

Dark Avatar grows
"Darkness Falls"

The Legend of Korra





Original air date
  • November 16, 2013 (online)
  • November 22, 2013
Written by

Joshua Hamilton

Directed by

Colin Heck


Studio Mir

Guest stars

Jason Isaacs (Commander Zhao), Jonathan Adams (Vaatu - Unavaatu), Greg Baldwin (Uncle Iroh), D. B. Sweeney (Aang), April Stewart (Raava), Grey DeLisle-Griffin (dark spider spirit - spirit mushroom)

Production number


Episode guide

"Harmonic Convergence"


"Light in the Dark"

"Darkness Falls" is the thirteenth episode of Book Two: Spirits of The Legend of Korra, and the 25th episode of the overall series. It was released on on November 16, 2013, and aired on Nickelodeon on November 22, 2013. On both platforms, it was paired with "Light in the Dark" to form the first part of a two-part season finale.


Despite her best efforts, Korra is unable to prevent Vaatu and Unalaq from merging and forming the Dark Avatar. Battling for the fate of the world, the fight between the two Avatars ends when Vaatu forcibly separates Raava from Korra's body and destroys the Light Spirit's physical form, effectively severing Raava's connection to the past Avatars. His counterpart destroyed, the Dark Avatar grows to a massive size and uses the spirit lights that cover the sky of the entire world during Harmonic Convergence, to transport himself to Republic City. Meanwhile in the Spirit World, Bumi, Kya, and Tenzin manage to track down and save Jinora's spirit from the Fog of Lost Souls. However, before they can return, Jinora senses that Korra is in trouble and leaves her family in order to help.


Free from his prison in the Spirit World, Vaatu declares to Korra that his release at Harmonic Convergence was inevitable. Korra resolves to prevent Vaatu from fusing with Unalaq to create the Dark Avatar; as Vaatu moves toward Unalaq, Korra first blasts the dark spirit away from him with firebending, then lifts Unalaq into the air with airbending and hurls him back through the Southern spirit portal. Telling Bolin and Mako to keep Unalaq out of the Spirit World, she enters the Avatar State, resuming her attack on Vaatu.

Angry spider spirit

Bumi, Kya, and Tenzin awaken a dark spider spirit, antagonizing it in the process.

Meanwhile, Tenzin, Kya, and Bumi search for Jinora in a spirit forest. Having found nothing, Bumi suggests that he try to track Jinora's spirit, but Kya is unsure if spirits leave footprints. As an alternative, she begins to meditate and points straight ahead after a moment, having felt a high concentration of spiritual energy from that direction; Bumi frustratingly declares that the spiritual energy is strong in every direction, as they are in the Spirit World. Tenzin suggests that they find a spirit guide, and walks toward a hollow tree to request the help of the spirit residing within. His plan backfires when the tree's inhabitant, a dark spider spirit angry that it has been woken, charges at the siblings and runs them off a cliff.

While Korra continues to battle Vaatu around the Tree of Time, Bolin and Mako are on the lookout for Unalaq outside the Southern spirit portal when they are attacked by a barrage of flying ice shards. Despite not knowing where Unalaq is, the two brothers defend their position rather than seek him out, knowing that they only have to keep Unalaq from returning to the Spirit World, not defeat him.

Iroh and a Knowledge Seeker

Iroh finds Bumi, Kya, and Tenzin with the help of a Knowledge Seeker.

In their search for Jinora, Tenzin becomes frustrated, noting that they are simply walking in circles. Kya suddenly hears a noise, and the three siblings are eventually found by Iroh and a Knowledge Seeker, who offer to guide them out of the Spirit World. Tenzin expresses his gratitude, but informs Iroh that they do not intend to leave the Spirit World without Jinora. Iroh warns them to be cautious when venturing into the Spirit World, as they could find themselves in "a place where only the lost will ever find [them]." Iroh vanishes before they can ask him what he means, but Tenzin realizes what they must do to find Jinora and urges his siblings to follow him.

Unalaq becomes the Dark Avatar

Using the spiritual energy caused by Harmonic Convergence, Vaatu and Unalaq permanently merge their entities.

Vaatu summons vines from the ground to incapacitate Korra, but she uses the Avatar State to escape his trap and renews her attack, surrounding him with an elemental sphere and preparing to return him to the Tree of Time. While this happens, Bolin and Mako are ambushed and subdued by Desna and Eska outside the portal, and Unalaq walks back into the Spirit World unopposed, where he attacks Korra before she can trap Vaatu inside the Tree of Time; the elemental sphere breaks, releasing Vaatu again. Bolin and Mako are able to surprise the twins and enter the Spirit World before being trapped in ice by Eska. Unable to gather her strength after Unalaq's unexpected attack, Korra watches helplessly as Unalaq fuses with Vaatu permanently, using the energy from the spirit portals to cement the bond. Unalaq, now a Dark Avatar, declares the beginning of a new era for spirits and humans, led by himself as the new Avatar; before attacking Unalaq, Korra defiantly declares that the era of the "old Avatar" is not yet over.

Zhao in the Spirit World

Admiral Zhao wanders the Fog of Lost Souls in search of Avatar Aang.

Tenzin resolves to antagonize the dark spider spirit they encountered before, believing it can lead them to the prison where Jinora is being held. The spirit captures them and drags them to a wide chasm in the ground, its floor obscured by a thick white mist. As it dumps the siblings into the abyss, the spirit declares that they will never escape the Fog of Lost Souls. Beginning to walk mist, Tenzin explains that, according to legend, the fog itself is a spirit that can infect the mind of a human and show them their worst memories, causing them to lose their sanity. Horrified, Kya inquires how long a human could be trapped in the fog, and as she does, Zhao happens to pass by, repeatedly identifying himself as "Zhao the Conqueror" and declaring to himself his intention to defeat the Avatar. Seeing Tenzin, Zhao mistakes him for Aang and attacks him, prompting Kya and Bumi to separate the two before fleeing as a group, leaving Zhao to disappear into the fog. The three decide to tether themselves to each other as a precaution against accidentally wandering off.

Korra and Unalaq's fight moves into the physical world, through the portal to the South Pole. Unalaq manages to knock Korra off balance onto the ground, where he traps her in a fissure in the earth; attempting to crush the Avatar, he orders her to give up. As the ground closes up over her, Korra is spoken to by Raava, who asks her to continue to fight, reminding her that she is the Avatar. She blasts her way out of the hole with firebending, having directly connected to Raava's essence, and resumes her battle, with Korra telling Unalaq that his victory is impossible.

In the Fog of Lost Souls, Bumi and Kya begin to suffer the effects of the fog; Bumi believes himself to be surrounded by cannibals, and Kya has the impression that she has no family. Stricken by panic and terror, the two untie themselves from the rope connecting the three together, and flee in opposite directions. Tenzin attempts to dispel the fog with airbending, but fails.

Eska kisses Bolin

Eska kisses Bolin after the earthbender's display of emotion.

Still trapped in ice near the Tree of Time, Mako pleads with Desna and Eska to release them, trying to explain that Unalaq is "an evil monster". Unconvinced, the two refuse to release the brothers, but Bolin begins to sob; when a curious Eska questions him, he tells her that he is distraught over the fact that the untimely end of the world will prevent him from being with Eska again. He apologizes to Eska for leaving her, expressing regret that they were unable to "rekindle the dying ember" of their love into a "big fire of love flames". Moved by Bolin's show of emotion, Eska kisses him and releases the brothers. Once out of earshot of the others, Mako compliments his brother's acting abilities, with Bolin somewhat skeptical that his show of emotion was completely acting. As they emerge into the physical world, they witness both Korra and Unalaq battling each other in their Avatar States. Korra is able to bring Unalaq down, but when their struggle pulls them within arm's length of each other, Vaatu leaves Unalaq's body and tears Raava from Korra's body, and she falls to the ground, most of her energy gone. Before Vaatu enters Unalaq again, the waterbender traps Raava in a shell of ice, grinning victoriously.

In the fog, Tenzin's fear, that of failing to preserve his father's legacy, begins to consume him. As he struggles to ward off his dark thoughts, a vision of Aang appears before him. Tenzin, hanging his head in shame, profusely apologizes to his father for not being like him; to Tenzin's surprise, Aang agrees that his son is not like him. Aang elaborates, telling Tenzin that he made a mistake in trying to mirror his father in the first place, as it caused him to develop a false perception of his identity. The old Avatar finishes by saying that his son is not him, and that, as a separate person from Aang, he should not be Aang, but rather be himself. The vision vanishes in a cloud of smoke, and as Tenzin, realizing who he is for the first time, repeats his father's message to himself, the fog retreats from him, allowing him to find Jinora and his siblings and lead them from the canyon. As they exit the valley, the fog covers the valley once again; their heads free of the fog's influence, Kya and Bumi regain their sanity, while Jinora expresses joy that her father has found her.

Raava destroyed

Raava is destroyed by Unalaq, ending the Avatar Cycle and severing Korra's connection to her past lives.

Despite their efforts to save Raava, Bolin and Mako are easily defeated by Unalaq, leaving the weakened Korra to watch as Unalaq attacks the light spirit. With every blow against Raava, Korra's connection to her past lives begins to break, and after several focused attacks, it shatters completely as Unalaq destroys Raava's physical form; in a vision, Korra sees Avatar Wan, her last remaining past life, disappear. As Vaatu defeats Raava, Jinora senses the sudden imbalance between dark and light; declaring to Tenzin, Kya and Bumi that Korra needs her help, she leaves them with a spirit to guide them out of the Spirit World and disappears.

Desna and Eska step through the Southern spirit portal to find Unalaq and Vaatu, unopposed by Raava's presence, growing into a massive dark spirit. The Dark Avatar proclaims the beginning of ten thousand years of darkness, before using the spirit lights to leave the South Pole and make his way to Republic City.


Production notes


Main article: Transcript:Darkness Falls

Series continuity

  • Zhao was brought to the Fog of Lost Souls after he was taken by La in "The Siege of the North, Part 2".
  • Jinora recalls that the last thing she remembered was being taken by dark spirits, namely by a dark dragonfly bunny spirit in "A New Spiritual Age".
  • Bolin apologizes to Eska for leaving her at the altar in "Civil Wars, Part 2".
  • The light spirit Jinora gives Tenzin to guide him and his siblings out of the Spirit World is a glittering butterfly, similar to the first spirit she and Korra encountered after entering the Spirit World in "A New Spiritual Age".
  • Korra pulling Unalaq in with water tendrils is reminiscent of Katara using the same technique against Azula in "The Crossroads of Destiny".


  • On November 15, 2013, Korra Nation challenged the fans to reblog a short video posted by Janet Varney on Korra Nation's Tumblr ten thousand times within twelve hours of its posting; if they did so, "Darkness Falls" and "Light in the Dark" would be available on at midnight that same night.[1] The task was completed by Korra fans within two hours, thus prompting the unlocking of the episodes.[2]
  • Iroh last saw Aang and Katara's children circa 131 AG.


  1. Korra Nation on Tumblr (November 15, 2013). Here's our big news, straight from Janet Varney!. Tumblr. Retrieved on November 17, 2013.
  2. Bryan Konietzko on Tumblr (November 15, 2013). Well, that escalated quickly.. Tumblr. Retrieved on November 15, 2013.

Start a Discussion Discussions about Darkness Falls

  • Kya Worst Memory

    4 messages
    • That sounds like myself, pretty reasonable, i got a new reason to like her....
    • WikiAldo wrote:Im still unsure about Kya madness en the "Fog of lost stuff", i understand Bumi and the cannibal thing but why of for what Kya g...
  • Korra and Vaatu's fight

    15 messages
    • Brave24 wrote:Well having said that, then escaping before Harmonic Convergence wouldn't have been smart even if he did find a way. In truth t...
    • Avatar Korra maybe related to Vaatu because her uncle is the dark avatar

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