Kim jongin or Kai, the kingka and the school most cold-hearted gangleader, fell in love with the girl named Jung Eunbi who is his playmate when they were young and very kind-hearted and innocent. However, Eunbi has that heart disease that killed her and Kai's world start to crush down. What he doesn't know is that Eunbi has a older twin sister named (You, OC)Darbi who was sent to America by her parents for her bratty attitude. What surprised him the most was the rude and 'don't give a ' Darbi is always cheesy around him and what he doesn't know is the secret Eunbi has kept from him. Darbi is gonna get Kai's back. How? If plan A doesn't work, there is always plan B!

"I am gonna get you, no matter what, Jongin!! Wait for it!!"