In this sweeping Korean drama, a married couple faces their greatest crisis when a family tragedy and a devastating medical diagnosis threaten to tear their world apart. The series follows Hong Hae-in, a brilliant and cold-hearted chaebol heiress who runs a prestigious department store, and her devoted husband Baek Hyun-woo, the son of farmers who gave up his own ambitions to support her. When Hae-in is diagnosed with a rare and terminal illness, the couple must confront not only her mortality but the deep chasms that have grown between them over their three-year marriage. As Hyun-woo secretly plans an elaborate revenge against his wife for years of emotional neglect, his resolve is tested by unexpected feelings that resurface. Blending high-stakes corporate intrigue with poignant family drama, this emotionally charged series starring Kim Soo-hyun and Kim Ji-won explores whether love can truly conquer all when faced with the ultimate deadline.