After spending the night at a lively music festival, Sooyoung drives her longtime friend back to her apartment when they misses the last train and bus. What begins as a simple gesture of kindness slowly transforms as the quiet intimacy of her home sets in. Within the walls of her apartment, playful teasing and late-night laughter give way to an undercurrent of tension. The line between friendship and something more begins to blur, leaving both of them caught between loyalty and temptation.