Early in the morning, a girl enters a convenience store on the outskirts of Seoul. Her nose is broken, her cheek is pink as if from a blow, and tattoos are visible through the bruises on her inner thigh. This girl, Ko Eunse, will have to endure more than one Saturday morning, having fallen into a time loop from Sunday back to Saturday June 7th. Over the course of eight Saturdays, she will become a participant in horrifying events, try to save a girl’s life, uncover a murderer and a secret sect, find true friends, fall in love and accept herself for who she is.