One day Terui Ryu and Sakuta Ryuusei met, and decided to punch stuff. So they walked around punching buildings, inanimate objects, animals, people, mooks, whatever they felt like punching it got punched.
Eventually they ran into trouble but who would save them other than Jinno and Otsugi. With the combined powers of Jinno chan and Suspender Fu Terui and Sakuta was saved. The two then allowed Jinno and Otsugi to join them in their quest to punch everything in the world.
Suddenly cakeboss appeared and told them how SUBARASHII this was. He then joined them as well.
And thus the five went around eating delicious cake and punching everything that needed to be punched.
And it was the greatest Kamen Rider movie ever.
THE END