The Changeman must work with an earthquake institute to prevent Earth from being destroyed in a sea of fire by the Gozma.
The Dynaman must prevent a powerful new gun invented by a friend of Doctor Yumeno from falling into the hands of the Jashinka.
The Jashinka Empire rises from the depths of the Earth to conquer the world. To stop them, Dr. Kyutaro Yumeno assembles five inventors to his laboratory, Yumeno Invention Laboratory and gives them the power to become Dynamen. Each member has their own goal, but as the Kagaku Sentai Dynaman, they are united to stop the Jashinka Empire in their tracks.
