Youyou is kind and innocent by nature, possessing a special affinity for approaching small marine animals, and is adopted by Su Wanqing, a fishing village woman. By a twist of fate, Su Wanqing finds her relatives in the Su family, the richest people. Arriving at the wealthy family, Youyou receives the family's care and affection. With her childlike sincerity and meticulous observation, she repeatedly discovers hidden dangers, resolves crises, and guards her loved ones around her. After all kinds of experiences, the Su family develops steadily, and Youyou's simplest wish is to reunite with her family members and share the locust flower and big meat buns handmade by her grandma.