Aoi, an ordinary boy, falls under a curse that transforms him into a frog anytime his body makes contact with water. He is magically transported to a different dimension, one where a kingdom of frogs exists. His objective is to locate the princess who can reverse the spell. Upon discovering that she lacks the means to counteract the curse, they embark on a journey to acquire the necessary incantation. During their adventure, they encounter fascinating creatures, navigate through perilous situations, and form numerous new friendships.