Once again, Musashi has encounter Ultraman Cosmos. Now Ultraman Cosmos has gained some new modes to defeat Scropis. Musashi has joined Team Sea to save the Blue Area. But there is mysterious evil monster, Sandros, who wants to destroy the Earth. Now it is up Musashi and Ultraman Cosmos to defeat Sandros and who’s the other Ultraman?

Movie adaptation of a novel by Rampo Edogawa.

Based on the story of the same name by Shizuka Ijûin. Ran as a double feature with Chibusa (1993).