When the Jashinka Empire rises from the very depths of the Earth to commence world domination. Dr. Kyutaro Yumeno of Yumeno Invention Laboratory assembles five young inventors and gives them the power to become a team known as the Scientific Squadron Dynaman. Each member of the team has their own goal in life, but as the Dynaman they are united to stop the Jashinka Empire in their treacherous plans.—J LeGault