On Liu Xu's birthday Song Rang gives her an expensive necklace, but the event flips when the Song family declares her formally engaged to Mr. Rong Yanyun. The engagement is a deal: one year of cooperation rights between the families in exchange for Xu's betrothal; the Song family vows to bring her back afterward. Xu protests, but the family insists and Mr. Rong places the ring. As they depart for the Rong household, a hinted birthday 'gift' is refused by Mr. Rong, leaving Xu to face a forced, uncertain year.