Lin Yao has been in love with Gu Ze for almost seven years. From high school to college, he has always been obsessed with her. Almost all her first times are related to him. To her, he is like a drug that cannot be quit, and he is the only antidote. In more than three years of being together, the two people's entanglement, separation and reunification, went deep into their bones. The two people who broke up because of an ambiguous text message met again at a class reunion...