This is the story of those armed with an unstoppable urge to fall in love who struggle for a future in a world where change is forbidden. The urge to fall in love will destroy the world. Fourteen-year-old Masamune lives in a town where the flow of time has stopped after an explosion at a steel factory seals off all avenues of escape. In hopes that everything will someday return to normal, the town makes a rule that nothing must be changed, and Masamune spends his days in depression. One day, his intriguing and enigmatic classmate Mutsumi leads him into a blast furnace at the steel factory. There, he finds Itsumi, a girl who cannot speak and acts like a wild wolf. Masamune's encounter with these two girls begins eroding the balance of the world. What future awaits the unstoppable urge to fall in love?