《Cheer Up》 is a heartwarming story that revolves around the lives of a group of high school students. In this light-hearted drama, we follow the ups and downs faced by Ha Dong-jae, a popular but arrogant student who falls from grace due to an injury. He joins the struggling cheerleading club led by Kwon Soo-ah, a determined and ambitious girl with dreams of reviving their team's former glory. As they face countless challenges together, they learn valuable life lessons about friendship, teamwork, and perseverance. Will they be able to overcome obstacles and find success both on and off the field?