When his video game prowess is discovered by the International Network of Excel-Science and Technology — or I.N.E.T. — high school student Kenta Date is brought in to lend his expertise to their mysterious research. Meanwhile, four classmates show up, wanting to know more about the I.N.E.T. facility. Their experience will change their lives forever, as I.N.E.T. survives an attack by the nefarious Dr. Hinelar and an army from another dimension determined to conquer our reality! Now, it's up to Kenta and his four classmates to "install Megaranger" and become the team of heroes their video games prepared them to be!

When a girl named Ariyoshi Juna has a severe accident, her spirit turns to light and rises up out of her body into the night sky where she gets a glimpse of Earth a few months into the future. What she sees is the Earth on the brink of total destruction, ruled by the merciless demon forces called the Raajas. Then, a person named Chris Hawken gives Juna a "power stone" and tells her to use it to save the Earth. The power stone gives her the ability to call up an "aura suit", which activates and enhances a person's dormant special powers.

Every era has an individual that begins a journey seeking the way of the road. The numerous adventures they encounter are harsh, relentless, and life threatening. It is the burning souls of these brave individuals that lead human beings to the future. People called them Adventurers. The Search Guard Successor Foundation collects treasures from all around the world that are scarce and about to be lost forever. Among the treasures, the secretive finds that contained dangerous powers were called “Precious”. If these Precious were to be robbed and utilized by Negative Syndicates, people would be put in serious danger. This is why the S.G.S. will form a secret unit to locate and defend Precious. The name of the unit is Boukengers.