Shen Yue, the Shen family's fake heiress, is reborn at the age of 12 with memories of her previous life, in which she was wrongfully imprisoned and died a tragic death. All she wants now is to take life easy, eat, sleep, and stay away from trouble. But her doting yet overachieving eldest brother, Shen Yichen, is determined to set her straight and even signs her up for a competition-focused reality show. Hoping to remain invisible, Shen Yue instead repeatedly reveals extraordinary abilities, from defusing bombs and solving tactical problems to counting cards. Along the way, she makes friends with Jiang Shiwen, Zou Xuerong, and others, while standing up to hypocritical rivals such as Zou Xuezheng and Li Xing. After the show ends, she enters a special class filled with geniuses, where she continues her battle of wits with her overachieving big brother.