After sacrificing her life to save a cat, Rio Yamabuki wakes up to find herself back in the past, on the very day her future husband proposed fifteen years ago. Back then, she thought marriage would bring happiness. But reality turned it into a nightmare of emotional abuse, exhausting caregiving for her husband's family, and a betrayal so deep that her husband and his lover—her best friend—ultimately took her life for insurance money. As Rio reels from these painful memories, a grim reaper appears and offers her a second chance: "Have the kind of marriage you want this time." Determined to rewrite her fate, Rio vows to live for herself and seize her own happiness! But just as she’s ready to take her next step, an unexpected twist arises—THREE amazing men, each claiming to be her husband, suddenly appear!