A Bitter Feud. A forbidden love. Two star-crossed lovers.

In South Korea, two families are in a constant fight over power. The Park and Kim families are known to all as two of the most wealthy and powerful in the country. They're also known to have an intense hatred of each other. The resulting turmoil has led to a decades-long feud between the two sides, who aren't afraid to use violence to make their presence known.

Within this never-ending feud, two people unexpectedly fall in love.

Park Jungsu (aka Leeteuk), heir to Park Industries is a young man with a heart of gold. Known to be kind to others, he wants nothing to do with his father's business and instead wants to live a normal life. While he may have looks and money, Leeteuk longs to find someone to love. He gets his chance when he sneaks into a party thrown by the Kim family and meets a beauty named Heechul.

Kim Heechul is the son and heir of Kim Incorporated. Heechul is known to be a diva and doesn't care what people think about him. After his ex Hankyung left to go back to China without any explanation, Heechul has no plan to fall back in love. It's not until he's forced by his family to attend their costume party where he meets an angel in the form of Leeteuk.

Despite knowing they're enemies, Leeteuk and Heechul fall in love. Leeteuk feels he's finally found someone to love with all his heart. Heechul thinks Leeteuk is his soulmate and feels real love for the first time.

But while their love blossoms, the hatred between their families intensifies. Leeteuk and Heechul know that the only way they can be together is to end the feud.

But is their love strong enough to end decades of hatred and violence? Or is it doomed to end like Romeo and Juliet?