Kyung Joo, a female designer, had a childhood friend she was closer to than just friends but not quite lovers. Just as she realized her feelings for him, he was taken away by one of her coworkers. Unable to recover from the heartbreak, she devotes herself entirely to work and spends seven long years doing nothing but her job. Eventually, a man she is genuinely drawn to finally appears, Jung Hwan. However, he has a wife and child, and at home he is an ideal, gentle husband and father. Young Jae, a male designer who harbors feelings for Kyung Joo, tries to persuade her that a relationship with a married man is a forbidden love that should not be pursued. Despite this, Kyung Joo and Jung Hwan gradually grow closer, and soon they can no longer hide their feelings for each other…