When Kai goes out with his bandmates to get coffee, he comes backs with something much more than that. He comes back with Lee Taemin, his doppelganger, his lookalike. Not forgetting, of course, the rest of Shinee.

Kai, who has been an orphan since the day he was born, who has been furtively trying to find his roots for a long time, realises that he might have a twin.

But Taemin, who's also an orphan, disagrees and protests that they aren't related, and notes that :

They're alike, but not exactly.

They don't have the same birthday.

They dont have the same surname.

They're not even the same age.

But Kai believes that Taemin is his great link to discovering his family, his past, and he belives that certificates can be forged, surnames can be changed, and everything happens for a reason. So, armed with his bandmate's support,  Kai drags the highly reluctant Taemin away from his normal, content life and into a rollercoaster ride that, just might change their very lives for the rest of eternity.

Meanwhile, Exo members Luhan and Sehun notice something strange going on between Jonghyun and Minho..