The Fairly OddParents (2001)
S05E29 Something's Fishy
Episode Overview
Timmy finds himself feeling incredibly bored at the beach. Along with Cosmo and Wanda, he decides to dive into an underwater adventure. However, they quickly discover that every fish they encounter seems to have an aversion to Cosmo. Their journey leads them to the fabled city of Atlantis. Timmy pleads with King Greg, the ruler of Atlantis, arguing that if he can prove why the Atlanteans should be joyful living underwater, Cosmo will be released. Can Timmy manage to rescue his friend?