Each member has their own goal, but as the Kagaku Sentai Dynaman, they are united to stop the Jashinka Empire in their tracks.

The eponymous Dynamen is a Super Sentai team assembled by Kyutaro Yumeno to combat the Janshinka Empire.

The Evolution Beasts (進化獣, Shinkajū) are the monsters used by the Tailed-People Clan Jashikna Empire that are created from the "Life Soup" mixed with the genetics of an animal that is placed in the Progressor Machine.

To make the Evolution Beast grow, the Tailed-People Clan Jashinka Empire would have them undergo the Big Bang Process.

To make a Mechaevolution Beast grow, the Big Bang Beam would be fired on them.