Cho-eul and Ju-ah have been BFFs since childhood. In high school, they shared a kiss, but it was only because Cho-eul said she was bored. They’ve continued to be inseparable, but only as friends. Deep inside, Ju-ah wants things to be different and even Cho-eul senses - and toys with - this unspoken tension. So how close is too close? What would happen if besties crossed the fine line between friends... and desire?