After a thunderstorm, Ye You Ning finds himself able to communicate with the past through an old mobile phone belonging to Xia Wen Xi his high school classmate. While he manipulating events in the past, he finds himself in various situations, goes through regrets, and gets to know the gravity of the choices he had made, and the true worth of his old classmates whom he had failed to cherish.
—tragedia lujuriaa