Cheer Up

The first year of Hae Yi's Yonhee University life begins; she runs into Jung Woo and hears about Theia; Theia is a squad about to go under due to a lack of members; Young Woong believes Hae Yi is the only person who can save the squad.

At the beginning of a new year, Yonhee and Hokyung compete in the joint pep rally; Jung Woo decides to choose two freshmen to perform with the squad; through a physical test, Hae Yi and Sun Ho get chosen; the fiercest training awaits the two.

Hae Yi refuses Sun Ho for the last time; despite their differences, she starts to feel something for Jung Woo; Jung Woo asks Hae Yi to overwork herself.

Hae Yi goes through a lot right before the Joint Pep Rally, but she steps up to the stage successfully; she learns that Jung Woo has a girlfriend.

Jung Woo and Hae Yi's relationship deepens on the field trip; however, the trip does not go well for Theia, who is targeted.

Theia is suddenly losing balance as many freshmen drop out; Yoo Min's return surprises Jung Woo.