One fateful day, all of humanity was petrified by a blinding flash of light. After several millennia, high schooler Taiju awakens and finds himself lost in a world of statues. However, he's not alone! His science-loving friend Senku's been up and running for a few months and he's got a grand plan in mind-to kickstart civilization with the power of science!

The key to save the world is in the primeval period!? Connecting the present and the past. Burning passion opens up the future!! A primeval survival mystery that passes through time and civilization!!

In a ruined world, a human girl, Roue, and a gear Zett, live a humble life. Then one day, they encounter a mysterious new gear, Chrome... Now all three of them live together like a family, but then...