- This article is about the episode. For the location, see Foggy Swamp.
| Admit mistakes when they occur and seek to restore honor.
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|"In the swamp, we see visions of people we've lost, people we've loved, folks we think are gone. But the swamp tells us they're not. We're still connected to them. Time is an illusion and so is death."|
|— Huu explaining Team Avatar's illusions.|
While flying, Aang and friends are attracted to a mysterious swamp and get separated from one another. They begin to see unique illusions in the swamp: Sokka sees Princess Yue, Katara sees her dead mother and Aang sees a mysterious giggling girl. They are reunited and attacked by a swamp monster, who turns out to be a wise man from a tribe of swamp waterbenders. He explains the nature of the swamp and their visions, including that the girl is someone Aang will meet. Meanwhile, Zuko and Iroh are forced to live life as commoners. Disguised, Zuko resorts to using his Blue Spirit guise to help himself.
Zuko and Iroh beg for money in the street of a village. Zuko refuses to grovel, trying to keep what dignity he has left, while Iroh is more than willing to accept their new situation and do what he must to get by. A swordsman approaches Iroh and has him sing for a gold coin. As Iroh sings, the swordsman swings his blades at Iroh's feet to have him "dance". As the swordsman leaves, Zuko is angered and humiliated by his uncle's self-degradation.
Meanwhile, Aang, Katara, and Sokka, while searching for an earthbending teacher for Aang, fly over a swamp. When Appa begins to inexplicably lose altitude, Aang tells his friends that he feels as if the swamp is calling to him; due to their reluctance to land, however, he agrees to leave. Suddenly, a tornado appears, overwhelming Appa and hurling everyone into the swamp; even though Aang uses airbending to make a sphere of air as a shield around Appa, the tornado shears it apart with ease. This separates humans and animals into two separate groups.
The human group begins looking for Momo and Appa. Aang and Katara are wary of the environment, sensing something ominous about it. Sokka uses his machete to haphazardly hack through the swamp vegetation, trying to clear a path.
Meanwhile, Appa, with Momo still on the saddle, is looking for the rest of Team Avatar. Trudging through the swamp, his path is blocked by a large root, which is too low to crawl under, too high to easily climb over, and the vegetation is too dense to fly over it. Seeing no way around the obstacle, Appa drops to the ground to rest. Momo wants to keep going, however, and digs out Aang's bison whistle, blowing on it as hard as he can. Appa roars in pain, but Momo whistles a second time. Fed up, the bison arches his tail and slams it down onto his back, knocking Momo out cold and stopping the noise. However, unknown to the flying bison and winged lemur, natives of the swamp have found Appa's tracks and are hunting them for dinner.
By evening, Sokka becomes annoyed at his sister and friend's warnings, stating there is nothing out of the ordinary about the place. At that moment, a scream echoes through the swamp, startling the trio. Realizing a small, white bird was responsible for the sounds, Sokka decides to build a fire.
Hunting a fly for dinner, Momo ends up on the back of one of the swamp's apex predators, a catgator. Alarmed, Momo hurries back to Appa with the catgator in pursuit. Appa opens his mouth and catches the surprised predator, momentarily holds it while it struggles, and spits it out. The catgator and Momo hiss angrily at each other, but the predator soon leaves, and Appa chastises the lemur for his behavior.
Aang, Katara, and Sokka make camp for the night. While they are asleep, a swamp monster attacks them, which results in a further separation of the group. Alone in the swamp, each person experiences a vision of another person. Katara sees her mother, and momentarily believes she has returned. However, after joyfully running over to meet her, her vision is revealed to be an ordinary stump; gasping in disbelief, Katara falls to her knees in tears. Sokka envisions Yue in spirit form, who says hauntingly to him, "You didn't protect me." Sokka refuses to believe what he has witnessed, clinging to the belief that there is a logical explanation for it. Aang spots a young laughing girl and a flying boar in the swamp; he does not recognize the girl. He calls out to her, but she runs away, and Aang begins to chase after her.
The two animals are confronted by the swamp-dwelling hunters Tho, Due, and their brethren, who are following them in canoes. Tho attempts to coax the animals toward him, but is unaware they understand his human speech, and when he casually mentions that they will become food once captured, Appa and Momo flee. Due shouts angrily at Tho for his ignorance; Tho defends himself by asking how he was to know about the animals' intelligence. To catch up with Appa and Momo, Tho begins bending the water around his canoe, causing it to speed forward rapidly.
Aang is still seen chasing the girl. Eventually, when he thinks he corners her, the vision of the stranger disappears with Katara in her place. Sokka drops in, literally, and they all confess their encounters. Aang and Katara wonder about the mysterious workings of the swamp, but Sokka continues to insist nothing is out of the ordinary until a giant swamp monster attacks them. It manages to grab Sokka and swing and slam him against the river. Aang frees Sokka by sending an air blade toward it, but the monster attacks him. The swamp monster subsequently grabs Sokka again and tries to surf away, but its arm is damaged by Katara's waterbending. It still holds onto Sokka, even after Katara forcibly pushes it away with a large wave. Katara is subsequently pushed back along with Aang, who had come back. From twisting and tangling its body with a tornado to Katara creating a big hole with a water drill or slinging an array of water blades, it does not seem affected, instead replacing its armor of vines. Yet with each cut, they see a man inside the monster, and one more water blade from Katara through the "head" forces the man to give up.
They demand to know who the waterbender is, but the mysterious figure wishes, in turn, to know why the three are in the swamp. Sokka reveals that Aang is the Avatar and that "stuff like this happens to [them] a lot." Understanding that the swamp chose them, the bender reveals his name: Huu. He reveals the reason he attacked them was that he was protecting the swamp which Sokka was harming. He takes the three friends to the roots of an enormous tree, the heart of the swamp. Huu reveals to them that he achieved enlightenment under this tree, and saw how the entire swamp is the roots of the single tree spreading for miles. He states that everything is connected, time and death are only illusions, and that the swamp manifests to people as visions of deceased loved ones, showing that they are still present spiritually. Aang asks about the girl he saw, stating it was no one he knew, but with Huu's encouragement, he realizes that the girl is someone he will meet in the future. Aang touches the tree, connecting to the swamp. Far away, he sees Appa and Momo being chased. Aang, Katara, and Sokka promptly rush to the animals' aid. When they finally arrive, Aang and Katara use waterbending against Due and Tho, but the swamp-dwellers use waterbending themselves. Upon this discovery, the fighting stops. Tho and Due unite with Huu, who had followed the gang, showing the waterbenders know each other.
The scene switches to Aang, Katara, and Sokka sitting around a fire in the swamp-dwellers' camp. Aang and Katara continue to wonder about the swamp, but Sokka is steadfast that there is nothing out of the ordinary. Out of their line of sight, a white screeching bird lands on a branch and lets out a screechy call but is immediately batted away by a sentient vine.
The last scene shows the swordsman, who mistreated Iroh and Zuko, in a dark alleyway. He senses someone there and pulls out his blades, demanding that the person show himself. Two hands grab his wrist, making him release the blades, and he is thrown into a stack of crates, knocking him out. The attacker walks up and retrieves the dropped swords. The camera pans up to reveal the Blue Spirit.
- Written by:
- Directed by:
- Also starring:
- Additional voices:
- Main article: Transcript:The Swamp
- Main article: Writing in the World of Avatar
- Main article: Avatar Extras for Book Two: Earth
- In the "The Blue Spirit", Momo presented, among other trinkets, an old crown to an ill Katara, which is the same crown he now throws at the waterbenders chasing him and Appa.
- When Sokka yelled out, "Why do things keep attaching to me?" while pulling off the elbow leech stuck to his arm, he was referring to the purple pentapuses that stuck to his face in the previous episode, "Return to Omashu".
- While Zuko and Iroh are sitting on the street begging, a man is seen approaching from their right carrying buckets, but he disappears when a side shot is shown, as does the cart that previously passed.
- When Iroh first sings to the man on the street his hat is on the ground by his feet, but when the man starts hitting the ground with his swords to make Iroh dance, the hat disappears.
- After capturing Momo and Appa, Tho is singing a song and tapping his arm on the boat, and right when he finishes his verse, his arm and Momo disappear.
- While Aang touches the root of the banyan-grove tree to locate Appa and Momo, only the tattoo on his right hand glows, while the tattoo on his head does not.
- The mask cart that passes Iroh and Zuko in the opening scene bears the same blue oni mask that Zuko uses for his Blue Spirit alter ego. When the mask is seen, we can hear the Blue Spirit's leitmotiv.
- Zuko gets himself new broadswords in this episode from the swordsman who forced Iroh to dance for a gold piece.
- Huu gaining enlightenment under the Banyan tree is similar to the Buddha's enlightenment.
- The plantbenders' pet alligator "Slim" is named after one of the creator's two dogs.
- The song Iroh sings at the beginning sounds similar to the song "It's a Long Way to Tipperary".
- The swamp seems, mostly when shown from above, similar to the Toxic Jungle from Hayao Miyazaki's Nausicaä of the Valley of the Wind.