Aoi, an ordinary boy, suffers from a peculiar curse that transforms him into a frog upon contact with water. Transported to a frog realm, he embarks on a quest to locate the princess capable of breaking the enchantment. Discovering the princess lacks the knowledge to dispel the curse, Aoi and his newfound companion journey in search of the elusive spell. Their adventure introduces them to a myriad of fascinating beings, exposes them to perilous situations, and leads to the forging of lasting friendships.