Background of the drama series is at a high school cheerleading club. Cheer Up! depicts the friendships and loves of youths, while dealing with a harsh educational environment that emphasizes competition.
Set against the backdrop of an incredibly competitive high school, a group of students find solace in cheerleading club, led by their passionate leader, Kang Yeon-doo (Jung Eun-ji). Along with the social and romantic trials of adolescence, this unlikely group of cheerleaders smile in the face of unreasonable academic expectations.