The heroine is a bit of a scumbag and treats other men as stand-ins for her first love. [You don't have to watch it if you don't like it. Some are things that happened in reality, slightly modified.
In the beginning, Xiao Huiran was a simple, kind and beautiful girl. She met Qi Hang when she was still young as a student. His family recognized her as their goddaughter. In the process of getting along, the Qi family gave her happiness and doted on her unconditionally. Unfortunately, the three members of the Qi family were burned alive.
When she was 17 years old, she met her first love, Zhou Ran, while working in a cafe. He taught her skills that she might not be able to touch in her life. She felt love again, and finally the boy disappeared from her world.
Since then, her life has undergone earth-shaking changes again. She is no longer her original self, and has become something that even she hates.
Zhou Ran: "I'm sorry, baby, I love you!"