Having come to Tokyo to rely on her older sister and her husband, Mariko makes a living by working part-time at a classic movie theater. She has had feelings for her brother-in-law Kenji since high school. Even though she knows that he is her sister Noriko's boyfriend, she dreams that one day he will realize her love and their love will be reciprocated. In a corner of the projection room, Mariko dozes off, listening to the sounds of the machinery...

A man named Saeki who frequents the cinema and meets a beautiful college student known only as the midnight companion. When everybody had left the cinema, the two would stay behind but this suddenly stopped when the midnight companion disappeared. Three years later, he has returned but a darkness inhabits him. Their love is rekindled but…