From the start of middle school to the end of university, Jeong Dohun has always harbored a one-sided crush on Lee Yejun. Dohun hoped that Yejun would always be by his side, but his hopes were crushed when Yejun suddenly got married one day.

Just when Dohun was about to go on a trip to finally put an end to his unforgettable, dreadful unrequited love, he hears the news of Yejun's divorce after three years. That night, Yejun unexpectedly visits him, saying...

“That trip, can’t I come with you?”