There's an unparalleled sense of immersion when watching a movie in a cinema. Shinji Takane's favorite pastime was catching a late show at his beloved cinema.

One day, he encounters his student, Tsumugi Ninose, at that very cinema. She apparently works there part-time.

"I've always loved this place. It has an atmosphere that feels isolated from reality..."

And, owing to a certain incident, they start watching movies together. Watching movies alone is good, but the time spent watching with her is also enjoyable. However... a professor and his student, two people of different ages and positions. A relationship that must be kept secret from everyone.

Light and shadow flicker on the screen. Amidst that illumination, the distance between them gradually shortens.

This is a story of a secret love that began at the cinema—.