In the world of Kamen Rider Gaim, because of a large company known as the Yggdrasill Corporation setting up shop in the once bustling city of Zawame (沢芽市 Zawame-shi?), it now feels like everyone is living in a jōkamachi (城下町?, castle town). To escape this feeling, young people throughout the city have formed dance crews called Beat Riders to bring joy back into their lives. Another rising popularity are the Lockseeds used in the Inves Games involving the conjury of creatures called Inves. Kota Kazuraba, a former member of the dance group Team Gaim who took on a few jobs to find his place in the world, learns that the Inves and the Lockseeds actually originate from another dimension. Using the Sengoku Driver belt, Kota uses the Lockseeds to fight the Inves as Team Gaim’s Armored Rider: Kamen Rider Gaim. However, Kota finds himself facing other Armored Riders in what becomes a Kamen Rider warring states period.