KO One 3 is a 2013 Taiwanese youth idol drama. It is the fifth KO series idol drama after KO One, KO One Family, KO Three Kingdoms, and KO One 2. The story continues from the ending of KO One 2, and the changed future of Golden Time and Space continues. Since the future of Golden Time and Space has been changed by Lei Ting and Zhong Wanjun, the combat power index and KO list also return in this drama. Huyanjue Luo Xiu told Wang Dadong that the leader of Jiuwu had given a new order, asking Wang Dadong to investigate the abnormally high combat power index of Golden Time and Space recently. All clues point to Guava High School, so the leader sent Wang Dadong back to investigate. Although Wang Dadong is 28 years old and does not want to go back to Guava High School, Wang Dadong did not graduate from high school, and under the advice of Huyanjue Luo Xiu, he did not have the right to oppose the leader, so he had to go back to Guava High School to continue his studies, and a new story is about to unfold...