Emilia died on a top-secret mission. When she opened her eyes again, her soul had transmigrated into the 22-year-old stepdaughter of the Wallace family, 80 years in the future. Overnight, her eight-year-old son had become an eighty-year-old man, who came with two troublesome great-grandsons. The elder is a gullible CEO, and the younger is an unambitious underground boxer. After reuniting with her octogenarian son, Emilia began to restore order to her 'descendants.' By chance, she joins a decryption challenge and discovers a hidden cipher—one created by her long-lost husband. This is the story of a family’s bittersweet reunion eight decades in the making. Success and heart belong to the reborn code-breaker.