Gu Ning'er left her city after falling out of love and went to a country where no one knew her. She met the lead singer of Sunshine, Yan Xinuo. Gu Ning'er relied on Yan Xinuo because she had no place to live. In the few months they got together, the two experienced a lot, from being uncomfortable with each other at the beginning to developing a vague good impression. Yan Xinuo is like a hedgehog, hard to get close to, while Gu Ning'er is like a cat. How will the relationship between the two people develop with the return of their first love and the family missions they each shoulder with different personalities?