In his past life, Liu Mohan reached the low point of his life due to a misplaced relationship. Returning to the day his fiancée broke off their engagement, he stopped entangling himself and turned to knock on Xu Qingyan's door. One is a female section chief burdened with work and raising three children alone, while the other is a homeless young man willing to shoulder responsibility. Together, they join hands to prop up their life bit by bit.