“The woman I promised a future with is having an affair with my friend through the window. She and I never broke up.” Ji-hyuk falls into a coma after a traffic accident while studying abroad. Seo-young, unaware of the truth and believing he abandoned her, marries his friend Min-jun. A few years later, upon discovering her husband’s infidelity, Seo-young gradually finds herself leaning on Ji-hyuk upon his return…