Seven-year-old girl Lin Taotao discovers that midnight toys wake up, which is very novel, and then the old toys before disappear one after another. She follows the clockwork fox Hui Er into the night city, and meets a collector who collects lost things. Taotao understands that love is not possession, respects the choice of toys, and finally resolves the crisis, making the night city a warm transit station for old things to look for new life.