At Haneul High School, Han Nari is the cold, top student who wants nothing but peace, quiet, and a scholarship.
Enter Lee Joon — the school’s reckless heartthrob, basketball star, and walking disaster.
They hate each other.
Or… at least, they say they do.
But when they’re forced into detention together, then assigned as roommates during a class trip to Jeju Island, everything changes.
From stolen glances to almost-kisses, and late-night confessions under the stars — their fake hate starts to turn into something real.
Just when they begin to fall, someone else confesses.
And secrets from the past threaten to pull them apart.
In a world full of rumors, rivals, and rooftop arguments, the real question is:
Can two enemies survive love… or will their hearts lose the game before it even begins?