The female lead donates blood to save the male lead's grandmother and is forced to marry him. Because of her involvement, the male lead is forced to break up with his girlfriend of many years. Years later, his ex-girlfriend returns to the country, and he drives his wife out of the house. But the very moment he loses her, it feels as though he has lost his entire world. After years of regret, self-destruction, and searching, he finally finds her again. The ruthless, cold-hearted CEO has long since planted a sea of gentle flowers in his heart for the female lead, waiting for her to return once more.