Xu An grew up with rejection and bullying, and is as sensitive and timid as a frightened rabbit; Gu Chen is a cold CEO in the eyes of the outside world, but he hides his tenderness towards her. When he warmed her world a little bit with warm milk and late-night protection, the relationship that started with guarding eventually became the light that healed each other, allowing her to regain her confidence and allowing him to take off his disguise and live together in a warm future.