"This is a prophecy for you, where five people will meet huge adversaries, and only you can protect everyone." Daisuke Toujima is a second-year high school student who was abducted in his youth. He became involved in a special phenomenon known as the Shibuya Drift, along with his childhood friends Gai, Ru, Marimari, and Keisaku. They were transported to the center of Shibuya, more than 300 years into the future. Awaiting them is an endless wilderness and forest, interspersed ruins, future citizens, and "Revisions," which are massive mechanical monsters. Trampled by these monsters without understanding the situation, they encounter Miro, a girl who shares the name of the person who saved Daisuke during his abduction. She provides them with a mobile suit called "String Puppet" and tells them to save Shibuya. With separated paths, adversaries, and destined prophecies, the boys and girls embark on a journey to return to their original time.