Based on the "2.26 Incident", an attempted coup d'état in Japan 1936, launched by radical ultra-nationalist parts of the military. Several leading politicians were killed and the center of Tokyo was briefly held by the insurgents before the coup was suppressed.

The Dynaman must prevent a powerful new gun invented by a friend of Doctor Yumeno from falling into the hands of the Jashinka.

Five scientists are defenders of the Earth. They have great dreams and transform using the Dyna Brace.

Warriors were chosen to battle the Dark Science Empire Death Dark. They fight using Future Science and their weapons are inspired by gymnastics apparatus.