Kamen Rider Ex-Aid (仮面ライダーエグゼイド Kamen Raidā Eguzeido) is a Japanese tokusatsu drama in Toei Company's Kamen Rider Series. It is the eighteenth series in the Heisei period run and the twenty-seventh series overall. The series started on October 2, 2016, joining Doubutsu Sentai ZyuohgerIcon-crosswiki in the Super Hero Time line-up after the finale of Kamen Rider Ghost. Starting on February 12, 2017, the series was joined by Uchu Sentai KyurangerIcon-crosswiki in the Super Hero Time line-up. After the finale of Kamen Rider Ex-Aid, Kamen Rider Build joined Kyuranger in the Super Hero Time line-up.
The motif of the series is retro video gaming, as the Riders of the show utilize game cartridges called Rider Gashats and have gear and form motifs inspired by retro video games. The series also integrates medical drama into the story because one of the main settings is a hospital and some of the main Riders are doctors. The tagline of the show is "Game Start!"Story
5 years ago, a new type of virus, named the Bugster Virus, infected humanity and turned them into creatures called Bugsters. In the present day, Emu Hojo, an intern and a genius gamer, receives the Gamer Driver and the Mighty Action X Gashat to transform into Kamen Rider Ex-Aid. Along with several other Riders, Emu must compete to save people from the Bugster Virus and become the "super doctor" who'll save humanity!