[s2e10] The Library Online

: Sokka finds a partially destroyed room detailing "the Fire Nation's darkest day." With the help of a Knowledge Seeker (a fox spirit), he discovers that a solar eclipse will render firebenders powerless.

: Angered by humans using his library for war, Wan Shi Tong decides to sink the library into the Spirit World, trapping everyone inside. [S2E10] The Library

In Season 2, Episode 10 of , titled " The Library ," Team Avatar travels to the Si Wong Desert in search of a hidden archive that holds the key to defeating the Fire Nation. Plot Summary : Sokka finds a partially destroyed room detailing

: The Gaang manages to escape just before the building disappears, but Professor Zei chooses to stay behind to continue his research. trapping everyone inside. In Season 2