Originally known simply as Kamen Rider Black during its theatrical release. Children all over Tokyo mysteriously disappear without warning. Kohtaro suspects that the Gorgom are behind the abductions and follows a suspicious-looking tour bus with kids on it, only to lose its trail off a cliff. With the help of a fisherman (played by Ishinomori himself), Kohtaro travels to a remote island and uses his abilities as Kamen Rider Black to save the kids and foil Gorgom's latest evil scheme.