On her fourth birthday, Duoduo is adopted by Prince Pingyang, a cold and distant man whose legs have been injured. Everyone thinks two unlucky people have been brought together, never realizing that Duoduo is a true lucky star. For the first time in the prince's household, she has new clothes, hot meals, and the love of a family. With her kindness and special abilities, she repeatedly helps Prince Pingyang. From being timid and afraid of being abandoned again to gradually calling them "Father" and "Mother," Duoduo slowly melts the cold atmosphere of the prince's residence.