The twin brother..

The elder white hair boy, Kim TaeYeon.

The younger black hair boy, Kim Taengoo.

Kim Taengoo is a good boy and about to engage with Tiffany Hwang.

Kim TaeYeon the elder is totally opposite. He is a rebel type.

Eventhough the twin brother and Tiffany is childhood friend but didn't why TaeYeon didn't gets along with Tiffany.

Tiffany hates TaeYeon so much and same as TaeYeon.

Taengoo meet Jessica Jung in a club.

Its not his nature to go into a club and get drunk, however that particular night he got drug by his brother friend that mistaken he's TaeYeon.

There something goes wrong and he lost his ity.

After that night Taengoo felt guilty but he can't do nothing about it as his engagement will happen anytime soon.

He wish he will never meet that girl again.

Unfortunately fate did make a strange play.

On Taengoo and Tiffany engagement party, Jessica Jung come.

Its turn to be Jessica is Tiffany bestfriend on state.

There its all turn upside down.