Avatar Book 2 Earth Episode 10 - The Library Episode Title:The Library.Episode Description:Sokka decides the group needs some intelligence to defeat the Fire Lord. At an oasis, the group encounters a professor who tells them about a hidden Spirit Library in the desert. The group travels deep into a massive and forbidding desert and eventually locate an entrance to the library, but Toph, who is unnerved by sand because it partially disrupts her ability to sense her surroundings with her bending, refuses to descend with the others and stays outside with Appa. Inside, Sokka discovers a crucial weakness to the Fire Nation that could end the war: the date of the upcoming solar eclipse which will temporarily prevent the bender of the Fire Nation from firebending for its duration. The spirit of the library, Wan Shi Tong, refuses to allow them to leave with the knowledge and sinks the library into the sand. Meanwhile, Appa is kidnapped by sandbenders while Toph, much closer to being truly blind than normal, is busy preventing the library from sinking into the sand. The others escape from the library but are devastated by the loss of Appa.