After a few years of Debut, suddenly GFRIEND get a collabration with the most powerful boy group, EXO. Never know that this sunbaenim is so different from their image. Every member have their history and problem. Lets' catch up how they got close in 7 days of preparation for their ads and fall in love to each other.

Jung Eunha, she saw everything. How her father was killed in front of her. After being an orphan, she and her little brother stay in their Uncle house. But because of greedy, her uncle deceiving her by sold her to a famous night club. Not only that, she doesn't know that the person who kill her father is hunting for her to kill because she witness his crime. "Save me!" Jung Eunha.   Oh Sehun, Sympathy and resemble the person who he had loves long time a