Watch The Legend of Korra - Book Two: Spirits full episodes English dub.
Synopsis: The second season, Book Two: Spirits, begins six months later, with dark spirits terrorizing the seas. Korra turns to her spirit-attuned uncle Unalaq, chief of the Northern Water Tribe, for tutelage, and opens the polar portals to the Spirit World at his direction. Unalaq then seizes power in the Southern Water Tribe by force, starting a civil war in which he is opposed by his brother, Korra's father, Tonraq. Seeking allies against Unalaq, Korra experiences the life of the first Avatar, Wan, who fused his soul with the spirit Raava to imprison her opponent Vaatu. Aided by his twin children Eska and Desna, Unalaq frees Vaatu during the Harmonic Convergence, a decamillennial alignment of planets, and unites with him to become a dark Avatar. As Korra fights this figure, her link to the previous Avatars is broken; but with the help of Tenzin's daughter Jinora, she defeats Vaatu and Unalaq, and leaves the spirit portals open, allowing a new coexistence of spirits and humans.
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