Sometimes, you cannot help control your feelings when you're in love. Love plays a tricky game, you can instantly fall in love with a person without you even wanting to. But if that person you love already belongs to someone else, you'd have to let her go even if it hurts. But what if that person you love, is also having the same feelings towards you?

It all started with a crappy marriage. A marriage that Taeyeon's parents forced her to get into. And what's worse, the girl she's getting married to turns out to be the person she least liked in this world. What would Taeyeon do once she gets married and lives in under one roof with Tiffany Hwang? Will there be war or will romance bloom between them?