The plane crash took away He Na's young life. Her husband and son were devastated and could not get out. He Na's soul couldn't bear to leave, and her soul was helpless. But yin and yang cannot be united. In order for her husband and children to live a happy life in the world, He Na's soul guides Mengmeng, a female college student she once sponsored, to match her husband. This leads to the turbulent love story of Yan Feng and Mengmeng.