Ayumi Kimito wakes up feeling refreshed, only to find herself in an unfamiliar room. Panicking, she is met by a shirtless young man who claims that last night, heavily drunk, she got into a quarrel with her neighbor Kenngo and followed him all the way to his place. As Ayumi insists she has no memory of the incident, Kenngo shows her video evidence from the previous night, revealing they had sex and became intimately involved. Despite her confusion, Ayumi feels an inexplicable attraction toward him. Trapped in this unknown room with this sudden stranger, their relationship takes an unpredictable turn in ways beyond imagination!