Takeshi Hongo is a promising young man with a passion for motorcycle racing. However, his dreams are suddenly ruined when he gets kidnapped by Shocker, the evil secret organization planning to dominate the world. After being remodeled into a cyborg, Takeshi escapes and swears to protect the world from the inhuman monsters.

21 years ago, a baby arrived on earth inside of a peach. Today, five warriors based on the legend of Momotaro fight enemies that are inhabiting humans, invisible to the naked eye. Together they fight to take back gears based on previous Super Sentai.

Dormant, experimental cells begin to awaken inside their human hosts, turning them into creatures called 'Amazons'. Two Amazons- Jin Takayama and Haruka Mizusawa- transform into Kamen Riders Amazon Alpha and Amazon Omega, aiming to exterminate the growing threat.

Daisato, a second-rate, third-generation superhero, annoys his neighbors with the noise and destruction he causes on the job. But a heroic public image is the least of his concerns. Besides defending Japan from bizarre monsters, he must deal with an agent seeking to brand him with ads, a superhero grandfather with Alzheimer's and a family embarrassed by his incompetence.

Atsuo Kashiwagi, an enthusiastic member of the village council, decides to invent a mysterious beast to make his village famous. Against all objections of his relatives, he goes through with his plan and starts organizing the first "viewings". The plan initially works out well and brings in a lot of money, many people dropping by hoping to catch a glimpse of the Yeti-like beast. But then the commotion gets out of hand leaving the whole village is in chaos.

Kageko, a teacher in a small mountain village with a thriving Japanese paper industry, is visited by a former student, who proposes a plan to manufacture counterfeit money. She initially refuses, but eventually decides to join the project for the sake of the poor children in the village and her own mentally handicapped child.

Haruhiko Nakayama is vice principal at a Japanese school, where he takes care of everything and dreams of finally becoming principal. But after a teacher no longer turns up for lessons, Nakayama has to teach a primary school class again after more than 20 years. He encounters such great challenges that he soon begins to doubt his profession.