Lu Youyou, the eldest daughter of the Lu family, is drugged in a conspiracy and, while disoriented, hides in Nangong He's arms. As the drug takes effect, the two end up sleeping together in the chaos. Later, Lu Youyou discovers she is pregnant, while Nangong He remains unaware and continues his ordinary life. Giving up on finding a father for her son, Lu Youyou takes her child abroad for several years. After returning home, a crisis befalls her family, forcing her to marry the domineering CEO Nangong He. Lu Youyou initially believes this is nothing more than an ordinary business marriage, never expecting that her child's father is right before her eyes.