This box set contains season 1, known as Book 1: Water, of the Nickelodeon series Avatar: The Last Airbender.
Book 1: Water is the first season of the Avatar series, and totals 20 episodes. In this season, the Avatar finds out more about who he is and where he came from. He also endeavors to master Waterbending.
More About Avatar: The Last Airbender:
Avatar: The Last Airbender tells the story of a 12-year-old Airbender boy named Aang (Zach Tyler Eisen), who is a master of all four elements - air, water, earth, and fire. The world is in a state of war since the Fire Nation went on the attack years ago, and Aang may be the only hope for restoring peace to a war-torn world.