The bad-tempered old lady Wu Moshun (played by Luo Wenxi) who runs a coffee shop is overbearing because she has a filial professor son (played by Cheng Dongri). Except for the old servant Park Laotou (played by Park In-hwan) who is really good to her in her youth, her friends all hate her, including her daughter-in-law. Once the daughter-in-law was hospitalized, the whole family, except for the grandson Zhihe (played by Zheng Zhenying), disagreed, and everyone else thought that the grandmother should be sent to a nursing home. When Grandma Moshun was lost, she wanted to go to the photo studio to take a posthumous photo, but she didn't expect that this photo would turn her into a younger look. The young Moshun changed her name to Wu Douli (played by Shen Enjing), started a new life, and even regained her dream when she was young-to be a singer. Douli's maverick behavior was welcomed by everyone, and even attracted the admiration of the TV director (played by Li Zhenxu), but her identity was facing the threat of being exposed. Should she stay at the age of 20 to enjoy life, or get back on track to face life, Moshun made a difficult choice.