Sun Da Lei and Su Yun have been in love for many years, yet still weren't able to escape the fate of their divorce. Afterwards, their twins are taken care of by Su Yun. One day, Su Yun finds out that she needs to travel to Hong Kong for a year for work and won't be able to take care of the children. Her boyfriend Huang Xin Hua takes over taking care of the two children, which suddenly makes Sun Da Lei eager to compete with this new father figure. However, he has never taken care of children before, not only causing a lot of trouble and jokes but also conflicts and misunderstandings. Sun Da Lei watches as his children's hearts gradually tend towards the more reliable Huang Xin Hua...