Medical genius Lydia Xia is reborn as two-hundred-pound new mother Lydia Lin, who is murdered by her stepmother just after giving birth. After taking fierce revenge, she goes undercover at the Pei family as a postpartum nanny. While transforming herself through relentless weight loss, she secretly treats the child's father—Preston Pei, the CEO with congenital heart disease. When a surgical crisis erupts, she personally saves the man who once rejected her, simultaneously unveiling the shocking truth that she is his child's biological mother.
