training underground to join her army. She traveled to Zaofu next, meeting Suyin Beifong, who taught her metalbending, nearly being kidnapped after, by Zaheer, Ghazan, P'Li and Ming-Hua though she is saved by her allies. With it being discovered Aiwei was part of the conspiracy to kidnap her, Korra sets out to find him, staking out his room and entering the Spirit World after him, where she learns Zaheer and his followers are part of the Red Lotus from the latter. Though managing to escape the Red Lotus, she is captured by Earth Kingdom soldiers, the Earth Queen having declared Korra an enemy. Korra and Asami succeed in escaping, but Korra is forced to give herself up so Zaheer will not harm the captive airbenders. Zaheer double-crosses Korra, taking her unconscious body with him, poisoning her with mercury so she can enter the Avatar State and be killed in it to end the Avatar Cycle. She breaks free and is able to combat Zaheer while battling the poison, though succumbs to it before Suyin attempts to bend it out of her, Korra being left in a fragile emotional state and being confined to a wheelchair as well. Book Four: Balance In the final season, Book Four: Balance, Korra returns to the Southern Water Tribe to recuperate under Katara's care, regaining her ability to walk but losing her ability to enter the Avatar State. She then travels the world though is haunted by a spirit of herself, even losing to it in battle. With the help of Toph Beifong, she removes the mercury from her body and reconnects with the world. Initially planning to reach a peace agreement with Kuvira, Korra duels her and loses her advantage when being haunted once more, being saved by Jinora and Opal. She is then reunited with Asami and Mako when they as a group of three are successful in recovering a kidnapped Prince Wu, though Korra soon begins doubting her effectiveness as Avatar prior to Asami and Tenzin encouraging her. Korra has a reunion with Zaheer who aids her in rescuing trapped souls in the Spirit World, preparing afterward for a showdown with Kuvira by requesting the aid of spirits in the conflict and tries to interrogate Baatar Jr., Kuvira's fiancé, nearly being killed when the Future Industries factory is destroyed by Kuvira. After convincing Kuvira to surrender following showing sympathy with her motivations,