[s1e20] Old Friends Today

: Consumed by the Avatar State, Aang merges with the Ocean Spirit (forming a giant water creature known as "Koizilla") to obliterate the Fire Nation fleet and end the siege. Key Highlights & Trivia

: Princess Yue, who was saved by the Moon Spirit as a child, sacrifices her life to restore Tui, becoming the new Moon Spirit. [S1E20] Old Friends

serves as the explosive finale to Book One of Avatar: The Last Airbender . Directed by Dave Filoni and written by Aaron Ehasz , the episode brings the major themes of sacrifice and balance to a head as the Fire Nation’s massive armada finally breaches the Northern Water Tribe's defenses. Plot Overview : Consumed by the Avatar State, Aang merges

: While his body is held captive by Prince Zuko in a frozen cave, Aang’s spirit seeks help from Koh the Face Stealer, a dangerous spirit who reveals the mortal forms of the Moon and Ocean spirits: Tui and La. Directed by Dave Filoni and written by Aaron