Im Yoona, she has been learning ballet since young because of her best friend, Jongin, who has passion for ballet. They trained together since young, both aiming to become the best of the best. Years passed, and their hardwork paid off. 

Jongin, although he's a man, his skills are superb. But a unfortunate incident made him unable to do ballet for a couple of months. He could still do it in the future, but not now. But who knows? He opted to become a ballet instructor for kids instead.

Yoona, of course, is a different case. She became Korea's best ballerina and she received an offer to go abroad for her skills. 

Would she accept the offer, leaving Jongin by himself in Korea? Those two were practically inseparable. 

Jongin is in love with Yoona for years. He dropped hints on Yoona but she was just too dense and naive. Would Jongin persuade her to stay or let her be?