The story centers on the daily life of college dorm roommates Yumi Irisu and Ruka Kujirai. Ruka, the older of the two, is constantly penniless despite her being active in a band. Irisu works part-time at a second-hand bookstore.

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.