At 5:32 pm, when the clock turned back for the first time, Lin Yu became the only sober person in the school. In this high school where time keeps looping, everyone is repeating the last day, and only he can remember every "yesterday". He must find out the truth behind the collapse of time, complete the unspoken confession in his infinitely repeated youth, and solve the mystery of his friend's mysterious disappearance. Because in every cycle, someone is being quietly erased by time—including himself.
