Liu Xiuying (played by Yang Kun), the social gangster grandma, and Liu Qimeng (Wu Jiayi), the socially fearful and introverted granddaughter) have been dependent on each other for many years but there is a gap. Due to an accident, the two souls exchanged. The sixty-year-old woman went to reorganize the workplace for her grandson. The post-2000 granddaughter lived an early retirement life and experienced a life of great contrast to each other.After this special experience, they gradually understood each other, and finally healed each other with love, accompanying and protecting each other.It shows a warm story about fireworks healing and laughter and tears.