Xia Xia, a "sparrow actor" who is busy with life, desperately takes over the identity of the He family's daughter because of guarding her grandmother's house, disguises herself as a "princess", and helps Ji Chengxuan, the adopted son of a wealthy family, to gain recognition from the He family, overcome resistance from all sides, and constantly pop the bubble of lies. , in the end, the two protected their family ties and unexpectedly gained each other's sincerity.