Taking place after the end of the series, Doubutsu Sentai Zyuohger Returns will focus on Zyumans and humans peacefully co-exist on Earth. It is then decided that they'll have a battle to determine who will rule the Earth, but a real danger lurks in the shadows.
When Earth is tearing itself apart by means of crime, pollution and war, aliens choose the time to invade, taking advantage of the lowering of everyone's guard. The Japanese government establishes an elite police organization known as Blue SWAT to combat the aliens, known as the Space Mafia. The aliens attack by possessing humans to obtain their goals. When an alien possesses the chief of the Blue SWAT unit to infiltrate the organization, it manages to completely demolish their building of operations and murder all but three SWAT members; Shou, Sara and Sig.
The Kamen Rider Amazon movie is a theatrical version of episode 16, Garander's Tokyo Sea of Flames Operation!!, depicting Gengoro Beastman's attempt to execute Garanda's Tokyo Sea of Flame plan.
The film deals with the recruitment of race car driver Jiro Miki (Masao Kusakari) and his dog, Caesar, to a group of people who use ESP, psychokinesis, and other special mental abilities to fight crime.
