Chaotic Secrets of the Lost City Episode 1 Perithon! ( Air Date 2009-10-31 ) Genre Animation, Kids, Sci-Fi & Fantasy category. Overview "With the M'arrillians defeated, the Allied Tribes celebrate the new spirit of unity by staging a race through Perim. Though it's supposed to be a friendly competition, it quickly becomes clear that each Tribe wants one of their own Creatures to win... at any cost!".