Doudou (voiced by Zhuang Bowen), a kid from Taipei, had to move to Tainan to live with his scary-looking mother (voiced by Wenying) because his father had a car accident and his mother had to deal with the afterlife. But Doudou was surprised to find that his mother was actually an exorcist with the power to subdue monsters, and the monsters were very afraid of her. One day, due to Doudou's playfulness, a monster (voiced by Xu Jiehui) was released. In order to deal with his mother, the monster used Doudou to do some things that hurt her in order to enhance its own magic power. As they spent time together, Doudou's feelings for his mother also changed. Whether his mother would be defeated was at the last moment. Whether Doudou could successfully help his mother defeat the devil depended on the last moment.