Ava and Sienna used to be childhood sweethearts and vowed to get married someday. When Sienna's leukemia relapsed, Ava donated her bone marrow, yet he remained ill and went abroad for treatment, leaving her his family heirloom. Fifteen years passed. Ava, now a reporter, awaits his return—only to find he's back to divorce her.
Betrayed by family and dying in regret, Sam goes back to 30 years earlier. This time, he abandons blind sacrifice, rejects emotional blackmail, and outsmarts his manipulative relatives. Armed with future knowledge, he fights for his own success and a better life for his wife and children.