Lin Ai, who works as a warehouse manager in a brand store, has a painful experience that is unknown to everyone. When he was young, his family went through a drastic change, his life was overturned overnight, his father died and his mother died. When he was in college, he was innocently implicated and was expelled from the school, and his future was ruined. In desperation, I wander on the edge. Later, I finally woke up, worked hard, and lived hard. But at this time, each of Lin Ai's old friends made a grand appearance. Song Lingwei, Lin Ai's first love when he was young, is already a successful businessman. After the reunion, the relationship went from ambiguous to entangled, and finally they were reluctant to leave; Cao Cao, Lin Ai's college classmate, had a mistake during the exam, which caused both of them to be expelled. Later, they went to study in Germany and became university professors. They have always been in love with Ai; Zhou Chu, who has known Lin Ai since childhood, helped Lin Ai when he left school and was desperate and helpless. Because of his dangerous identity, his deep love is hard to express. A painful and unforgettable love, a tragic and sad family relationship. In the end, who will she hold hands with to return to happiness?