Ai-oon is the disappointing twin of successful and beloved Ob-oom. They aren\'t close.\n\nOn Ob-oom\'s wedding night, she takes Ai-oon aside and makes a request of her. Ob-oon and her husband Paul will be going away for their honeymoon and she\'ll be leaving something important behind: a lover, May, she hasn\'t broken up with—and she wants Ai-oon to do it for her.\n\nIn the early morning following the wedding, Ai-oon learns that the newlyweds got into an accident. Paul has passed away and Ob-oom is in a coma. When Ai-oon decides to fullfil her sister\'s request, she\'s shocked to learn that May is both blind and a woman. She finds herself unprepared to complete the task.