A youth romance about two men and woman who aren't blood related but treated each other as family during their teens and how they meet again after 10 years.
Hae-joon is filled with a deep sense of betrayal as he watches San-ha and Ju-won on the verge of kissing, struggling to understand how Ju-won could accept San-ha as a boyfriend. He’s haunted by the fear that, like everyone else before them, they too will eventually leave him. Meanwhile, though he knows where his mother is, Hae-joon watches her from a distance, and each glimpse only fuels his growing hatred for her.