When he returns to Earth to attend the wedding of his friend in Saipan, Musashi meets a beautiful girl named Shau who claims to come from the bottom of the sea. Just then, Monster Scorpis reappears in the sky above the island and Musashi faces the monster in order to protect the girl. What is the girl's true form? And what is the strange shadowy form that follows the monster Scorpis?
as Musashi Haruno / Ultraman Cosmos
as Mari Kawase
as Alien Gyashi Jin
as Alien Gyashi Shau
as Kido
as Hyuga
as Kanou
as Makabe
as Tsutomu Sasaki
as Shoji
as Rita
as Boys and Girls of Blue Area 1
as Boys and Girls of Blue Area 2
as Boys and Girls of Blue Area 3
as Boys and Girls of Blue Area 4
as Boys and Girls of Blue Area 5
as Boys and Girls of Blue Area 6
as Boys and Girls of Blue Area 7
as Boys and Girls of Blue Area 8
as Boy from Kitakyushu
as Reporter
as Harumitsu Hiura
as Shinobu Mizuki
as Keisuke Fubuki
as Koji Doigaki
as Ayano Morimoto
as Kinozaki
as Akagi
as Hijikata
as Inugai
as Yujiro Haruno
as Ultraman Cosmos (voice)
as Ultraman Justice (voice)
as Shirubyi (voice)
as Sandros (voice)
as Female Operator (voice)
as Narration (voice)
