KO One Re-Member (traditional Chinese: 終極一班4; simplified Chinese: 终极一班4; pinyin: zhōng jí yī bān 4; literally: "The Ultimate Class 4") is a 2016 Taiwanese drama starring Pets Tseng, Wes, Wayne, Zhiwei and Sylvia Wang.
It was produced by Comic International Productions (可米國際影視事業股份有限公司), Gala Television, and Youku Tudou, it started filming on December 10, 2015 and wrapped on May 8, 2016. it was first broadcast in Taiwan on cable channel Gala Television (GTV) Variety Show/CH 28 (八大綜合台) and IQiyi Taiwan on June 27, 2016 to September 16, 2016.
Fourth installment of KO ONE: Continues the story where KO One Re-act left off: Lei Ting suddenly went missing after she and Xiu were lured back from the Iron Dimension by a fake message and attacked upon arrival by unknown forces.
The KO one class no longer has its leader, so Gu Zhan and Zhi Ge, despite their brotherhood, fight.
The KO one class initially suspected the three Students from Little Apple High School of the kidnapping and fought against them.