4. In Harm's Way

At the North Pole, Zaheer and his team free P'Li from her icy prison, and she is revealed to be a powerful combustion-bender. In Ba Sing Se, Lin Beifong arrives to warn Korra about the threat to her life. With Lin's aid, Team Avatar liberate the press-ganged airbenders. After escaping the Dai Li and the Earth Queen's wrath, Tenzin takes the airbenders to the Northern Air Temple on their consent, while Lin, Korra, and her friends search for more airbenders.