Lin Duo, the adopted daughter of the Lin family, learned that the long-lost true heiress was about to return home. Full of guilt, she showed all kinds of favor via WeChat in advance, calling her baby every bite, single-mindedly wanting to make it up to the other person. On the day of welcoming, the gate opened, but what she waited for instead was Jian Xi, the lost biological son of the Lin family. The previous ambiguous dialogues turned into a large-scale social death scene. Jian Xi had already fallen in love, pretended to show weakness to manipulate Lin Duo step by step, and the two were betrothed by their elders. Lin Duo fell in love amidst misunderstandings and tug-of-war, and finally ended up together with this black-bellied teenage boy whom she had mistaken for a girl.