The second season of the American animated television series Adventure Time, created by Pendleton Ward, originally aired on Cartoon Network in the United States. The series is based on a short produced for Frederator's Nicktoons Network animation incubator series Random! Cartoons. The season debuted on October 11, 2010, and the season finale was aired on May 2, 2011. The season follows the adventures of Finn, a human boy, and his best friend Jake, a dog with magical powers to change shape and grow and shrink at will. Finn and Jake live in the post-apocalyptic Land of Ooo. Along the way, they interact with the other main characters of the show: Princess Bubblegum, The Ice King, and Marceline the Vampire Queen. The first episode of the season, "It Came from the Nightosphere" was watched by 2.001 million viewers; this marked a decrease in viewers watching Cartoon Network when compared to the previous season's debut, although it marked an increase when compared to the previous season's finale. The season ended with the episode "Heat Signature" on May 9, 2011. Several compilation DVDs that contained episodes from the season were released after the season finished airing. The full season set was released on June 4, 2013 on DVD and Blu-ray. The season was storyboarded and written by Adam Muto, Rebecca Sugar, Kent Osborne, Somvilay Xayaphone, Cole Sanchez, Benton Conner, Jesse Moynihan, Ako Castuera, and Tom Herpich, while being produced by Cartoon Network Studios and Frederator Studios. The series is rated TV-PG.