Kane is a popular internet singer. He becomes famous with a song about his first love. Cora, the manager of the famous dessert store "K.," wants him and the store owner, Yi Fan, to work together. After Kane finally says yes, they meet up in a concert and are unexpectedly attracted to each other. However, Kane reveals that he doesn't like desserts.

Yi Fan makes a bet that Kane will fall for his dessert. If he loses, he will do anything Kane wishes. When Kane sees the cake, he resents it as always. But after he tastes it, he actually falls for it! As their collaboration begins, Kane starts to make desserts with Yi Fan.

The electricity suddenly goes out in K. Yi Fan is panicking because of the darkness. Kane goes to calm him down. It brings them closer. Cora suggests to promote a gay marriage. It turns out that one of the grooms, Soda is Kane's first love in high school.

Kane and Yi Fan interact more, but Yi Fan finds out that Soda is Kane's first love and feels jealous. As a music producer, Soda start to work with Kane, and they get to pick up where they left off. It also makes Soda feel confused about his marriage.

Kane creates a demo for the cooperation. Yi Fan brings up that Kane should be a heartwarming singer and suggests that he can't hide himself forever. During their conflict in the kitchen, Yi Fan surprisingly confesses his feelings for Kane, and Kane starts to fantasize about them being together.

Yi Fan's confession makes Kane feel troubled. When he goes to the dessert store, Yi Fan is not there. He helps to look after the store and eats a few cookies. He falls asleep afterward and almost sets the store on fire. Yi Fan gets upset when he gets back, and Kane leaves in deep sorrow.

Kane gets food allergy and goes to the hospital. Yi Fan visits him and sees Soda holding his hand. It makes him angry with Soda. Soda's fear for marriage makes his fiance confront him.

Yi Fan takes care of Kane in the hospital and escorts him back home. It makes Kane deeply moved. Soda decides to speak with Kane about their relationship in the past and end it once for all. As he's ready to devote himself to the marriage, his fiance disappears.

Soda have regrets about his fiance's leaving and goes to K. to ask for everyone's help. He learns about that his fiance is leaving for Thailand, and all of them rush to the airport to get him back. In the meantime, Yi Fan and Kane are gossiped about as a couple.

As the gossip goes viral, Kane has to clarify his relationship with Yi Fan on the online live session for the new song on the wedding day. Kane doesn't know what to do. Yi Fan notices it and brings up the bet they made.