Gyujin, a 26-year-old virgin and the sole heir of a distinguished blue-eyed German shepherd family, finds himself at a crossroads when his parents set up an arranged marriage to continue the family legacy. Desperate to evade this destiny and particularly averse to the idea of marrying a female shepherd, Gyujin impulsively declares a preference for smaller dogs. To maintain this facade, he enlists the help of Youngwoon, a childhood friend from a small breed, asking him to pose as his boyfriend. Youngwoon agrees, but with a peculiar twist: Gyujin must convincingly act as if he truly harbors romantic feelings for him. This odd arrangement plunges Gyujin into a tangled web of pretend affections and real emotions, leaving him to wonder if his hasty plan might lead to unexpected complications in both his familial obligations and his heart.