Avatar: The Last Airbender (season 1)
The season goes around the protagonist, Aang, and his friends Katara and Sokka and their journey to the North Pole (to North Water Tribe) to find a Waterbending master to teach Aang and Katara how to control water. Fire Lord Ozai, the current Fire Lord of the Fire Nation, is waging a seemingly endless war against the Earth Kingdom, the Water Tribes, and the already destroyed Air Nomads. Aang, the current Avatar, must master the four elements—Air, Water, Earth, and Fire—before win the Fire Lord and ending the war. Along the way, Aang and his friends are chased by various pursuers, including Prince Zuko, a banished Fire Nation prince, and Admiral Zhao, a key member of the Fire Navy.