Yoonhee, diagnosed with breast cancer at the young age of twenty-eight, falls into despair after the unexpected news. One night, after drinking far more than usual, she mistakes a suspicious-looking man for a molester. Their disastrous first encounter only deepens when she later runs into him again in an entirely unexpected place. As their strange connection continues, the man insists he’ll take responsibility for her—raising the question of whether they can really finish the “XX construction” without falling apart.