Hyeri, a girl which is never trust or attract with love because she won't get hurt by a guy again. She made a promise with herself that she won't fall in love with any guy. But Mark came and make her fall in love with him day by day. Will Hyeri break the promise that she have made or not..?? Starring by :- - Girl's Day Lee Hyeri as Lee Hyeri - Got7 Mark Tuan as Mark Tuan - Red Velvet Wendy as Wendy (Mark's Sister) - Infinite Lee Sungyeol as Sungyeol (Hyeri's Brother)