.Sung-jae is a diligent, clean-cut doctor who has lingering feelings for his first love from high school. Sung-Jae always finds Sa-in reappearing in his dreams just as his memories of him are about to fade. Then for the first time in 11 years, he shows up again in Sung-jae's life. However, Sa-in's playfulness makes it hard to tell if he also has genuine feelings for Sung-jae. Will this atypical encounter unfurl into romance?