Orphaned Ava and her daughter Lily are forced into an arranged marriage with cold billionaire Damian, taking her stepsister’s runaway bride place. Resentful at first, the aloof CEO is gradually healed by their gentleness. When Ava suffers from severe congenital heart disease, Damian spares no effort to save her. What begins as a mismatched contract marriage blooms into redemptive love and a warm family happy ending.