A, B, and C are three girls who live in the same dormitory at the university. A has a crush on B for a long time but is afraid to express it. C secretly dates B's boyfriend D, and over time they develop a relationship. Under the pressure of work, Ding went on a date with C behind B's back, but the one he loved most in his heart was still B. B deeply loves D, but conflicts often occur during their interactions with D. Only A silently stays by B's side, making B feel that he is the most relaxed and free when he is with A, and the relationship between the two becomes more intense. Taking a step further, at this moment, Ding discovered all this. How will the three of them face their own hearts and each other's feelings...