Lee Yunhee is the 10^th member of Girls’ Generation. She is Lee Donghae’s adopted sister and Eunhyuk’s cousin and she used to date Hankyung.

 One day Girls’ Generation take a charity trip to Japan with Super Junior, Big Bang, DBSK , Shinee, etc.

But something happen.

Yunhee found herself was on the lifeboat faraway from land with Kim Heechul and both of them are lost their memory. But, they wore the similar ring.

What exactly happen between them?

PS: My English is bad, but I'll try so hard to make you understand Kamsahamnida^^