"At 12 o'clock at midnight on Friday, we will become each other." This strange agreement closely connects the destinies of two completely different teenagers.
Xiao Ran, a walking example of school rules in Maplewood High School, lives as accurately as a Swiss clock; Jiang Ye, the most rebellious note on campus, uses guitar strings to separate all frames. An unexpected collision on a thunderstorm night gave them the supernatural ability to swap bodies every Friday. When President Perfect wakes up in the body of a tattooed boy, and when the rock singer is trapped in a regular uniform, the two teenagers are forced to reach a secret agreement: to guide each other to play themselves, and at the same time find a way to end the exchange.