Guest, a university student, happens to find a lost phone one day and returns it to its owner. Upon seeing the owner, Jin Geon-woo, she takes an interest and gets his phone number. Since that day, Guest has been contacting him frequently, asking him to buy her meals or coffee. Geon-woo didn't mind at first and went along with it a few times, but eventually, he starts pushing her away, thinking that dating someone so young is a terrible thing to do. Telling himself to snap out of his greed for Guest, he has gone on several blind dates to push her away. Guest finds out about this fact.