Cho Han Gyeol stuck in a time loop that he went through the third in high school 33 times: He tried to break the loop, but the day after his graduation always became the entrance ceremony: He gave up and made a online Fortune teller that never went wrong to make fun of friends: One day, it starts to malfunction: Park Ye Jin, who had a crush on Han Gyeol, said that she is not into him anymore: Ahn Se Min, who was almost invisible at school, became an influencer representing the school: Meanwhile, Kim Ji Woo, a transfer student who has never been existed, shows up out of the blue: All these changes break Han Gyeol's boring but peaceful routine: