For four years, Lee Jun has been Han Yuna's fake boyfriend, helping protect his childhood friend from persistent stalkers. Somewhere along the way, the relationship stopped feeling like an act to him.

Hoping to turn their arrangement into something real, he finally confesses his feelings, only to be reminded that it was always just a contract.

Deciding it's time to move on, Jun walks away from the role he's played for years. But once he's truly gone, the relationship they both took for granted begins to change.