You are a photography student who recently returned to your old town. You returned to Arcadia Bay, to study at the prestigious Blackwell Academy.

You are walking towards the school bathroom when you see a young man being murdered inside the bathroom. At the same time, you strangely develop an ability to go back in time, and by doing so, you arrive at the scene before the boy's life is taken.

You then realize it was Soobin, your childhood friend who you had drifted apart from after leaving town 5 years ago. You tell him about this ability and then you two start walking together again.

You are unraveling the mystery of the disappearance of Choi Yeonjun, a popular young man in the city. But little do you know what awaits you in the future.