Straight-A student, a good social circle... Do-jun had no doubt that his campus life was going to be a breeze—until he reunites with Jae-hee, a friend he ghosted back in high school after he confessed his feelings for him. Well, their past shouldn't be that big of a deal, right? Everyone develops stupid crushes when they're in high school, and it seems like Jae-hee is over it anyway. Or at least, that's what Do-jun thought until Jae-hee offers a deal to him: "Be my boyfriend for 4 weeks!"