Song Chaeyeon is unable to have intimate relationships with men due to past trauma. Yet marriage feels like an inescapable destiny for her. At twenty-eight, when hope seems lost, Woo Taeseok appears in her life with an unexpected “gift.” “Say no.” “What?” “Say no—to your future husband, or to me who’s crazy about you. Say no. It hurt, didn’t it?” They are only words meant as guidance, yet he acts as if he were a man deeply in love. “If you understand, come here.” But there is a limit. This romance is merely part of a lesson, and every lesson must eventually end.