Three free and romantic young people live a life with their own thoughts: some are eager to get rid of singleness, some want to debauch before getting married, some want to gain a foothold in the big city. Because of an emotional derailment, the three kinked into a mess of "joking and scolding". When various values ​​collide, when a person needs to balance family friendship and love...their chaotic life is like half a comedy.

富家女杨家珍（马丽 饰）与小捕快李茂（常远 饰）成婚，虽夫妻恩爱，但始终得不到家珍父母的认可。李茂意外发现自己竟与当朝太子相貌相同，一个想进宫获得晋升，一个想出宫获得自由，二人交换身份，却不知正一步步卷入尚书的阴谋里……