Story : At the beginning of a new year, Yonhee and Hokyung compete in the joint pep rally. Whereas Hokyung has a powerful team, Theia lacks the minimum number of members. Therefore, Jung-woo decides to choose two freshmen to perform with the squad. Through a physical test, Hae-yi and Sun-ho get chosen. To prepare for the rally, the fiercest training awaits the two.