Fifth grader Kei Watanabe has inherited the hunter's blood to hunt yōkai. To save the world from destruction, Kei challenges a war against the yōkai.

A young Kamen Rider fan is granted his wish of seeing Riders in person, initiating the ultimate Japanese superhero crossover meta film. The third and final installment of the Heisei Generations series finds Kamen Rider Zi-O and Kamen Rider Build joining forces with all of the other Heisei Generation Riders to reverse the damages of an evil Time Jacker named Tid, and save their legacy. Are Kamen Riders real? Will you believe?

“明明是清白的却被当作罪犯来对待”像这样由于惹上冤罪而受到伤害的普通老百姓大有人在。 本剧讲述的是一名青年律师在科学家、记者等同伴的帮助下，通过奇思妙想的验证实验，为人们洗清冤罪的故事。