Shintarou Jagasaki, a discontent neighborhood cop dreaming of a more exciting life, witnesses a brutal murder by a monstrous-faced man, leading him to a life-altering revelation. After unwittingly unleashing a lethal power from his fingertips in a moment of desperation, he discovers an eerie truth about the transformed beings terrorizing his town. Determined to protect his loved ones, Shintarou embarks on a perilous mission to battle these former humans infected by sinister frog-like entities.