The three-and-a-half-year-old Chi Xiaonuan unexpectedly arrives at the Li family, becoming Li Siheng's youngest daughter. Newly arrived, she uses her innocent and cute personality to slowly melt the aloof father Li Siheng, and also gains the love of six older brothers with different personalities. Facing a brand-new family life, Chi Xiaonuan uses kindness and sincerity to accompany each other and grow together with her family members. Daily life is filled with warmth and laughter; she slowly adapts to her family's care and also learns to get along with people, feeling the warmth brought by family affection. The members of the Li family, in their bustling and lively life, increasingly understand how to cherish one another, portraying a heartwarming family story full of love and companionship.