I miss you, baby. And I hope I'll see you again some day.. S2

Eun Mi and Doo Joon met at a amusement park. He works there, she was on holiday. They meet, fall in love and soon, Eun Mi has to return to her country. They were heartbroken, hoping that they'll see each other again.

Few years later, Eun Mi and her friend moves to Korea to pursue her music career. Doo Joon? He debuted in a boy band named BEAST. Fate causes them to meet when Eun Mi is a trainee in Cube Entertainment. Both of them feel that they have met before. But where? Will they remember each other finally?