Su also experienced four rebirths, and each time he died on the wedding day of Bai Yueguang and Shen Yanzhou. When he woke up for the fifth time, he found that the screen saver on his phone had changed into a stranger's hand, and he received a mysterious message on WeChat saying "Don't go to the wedding." This time, he decided not to die, but to explore the truth - why was he reborn again and again? Who's stopping him? Who is the person who has been standing downstairs for countless nights?