Book 2 Chapter 20 "THE CROSSROADS OF DESTINY"

Aang and Sokka reunite with Toph and set out to find Katara. Azula has been placed in charge of the Dai Li by Long Feng during the coup. Iroh and Zuko are greeted at the palace by Azula and the Dai Li. Iroh evades capture, but Zuko is quickly overwhelmed and thrown in prison with Katara. Iroh finds Toph and Team Avatar joins forces with him. Sokka and Toph rush to the palace to warn the King of the coup, but they arrive at its commencement. Sokka and Toph reach the throne room, only to be defeated by Azula, Mai, and Ty Lee. As they and the King are led away, Long Feng arrives intent on double-crossing Azula, only to find that the Dai Li no longer obey him. Aang and Iroh arrive at Katara and Zuko's cell to rescue them; Azula then appears and traps Iroh, offering Zuko his honor if he joins her. Aang and Katara try to escape the catacombs, but are attacked by Azula, the Dai Li and Zuko, who has made up his mind. Aang lets go of his attraction to Katara to enter the Avatar State, but as he does he is shot and mortally wounded by Azula's lightning. Iroh intervenes to help Katara escape with Aang and is captured. Katara uses water from the North Pole spirit oasis to resurrect Aang. At the end of the season, Team Avatar and the King fly over the wall in defeat.