10 years after a mysterious meteorite crashes to Earth, people called "Rams Carriers" develop superhuman abilities called "Rams". However, those who develop these special abilities can only survive in the presence of the "Mebius Dust" released by a giant crystal, and so they are forbidden from leaving the town of Shinkatsushika. Within Shinkatsushika, Rams Carrier children use their Rams to play a territory-conquering game to alleviate their boredom at being unable to leave town. High school student Araki along with his younger sister, Stella, and his childhood friend, Olga, form a team called "Polis Hopper" and throw themselves into the game. Their destinies begin to change when Professor Yuda, a researcher who studies Rams, asks them to participate in a certain experiment.