One day, more than 30 race queens were gathered on an uninhabited island. It was a mention of a photo session, but the manager is not allowed and there is not even a shooting staff on the island. In the midst of a disturbing atmosphere, a mysterious announcement called "Kill each other now" suddenly echoed throughout the island. Mariko Yokosuka, who is a high-flying car, was the first to take the machine gun from the provided weapons and shot and killed many women who were there. Atsuko Sakuraba, who escaped hardship, goes into the forest to find her friend Ushikawa. But what was waiting there was a mortal battle of feud and betrayal, jealousy and hatred swirling. Will the Sakuraba who joined can survive this terrible battle!?

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?