Dr. Stone Vol 8: Hotline: Volume 8, Paperback Book, By: Riichiro Inagaki

One fateful day, all of humanity turned to stone. Many millennia later, Taiju frees himself from the petrification and finds himself surrounded by statues. The situation looks grim-until he runs into his science-loving friend Senku! Together they plan to restart civilization with the power of science! In order to win the coming battle without shedding any blood, Senku and friends decide to infiltrate the Tsukasa Empire and install a secret hotline! But who will answer the first crucial phone call?! Meanwhile, the Kingdom of Science is hard at work on a steam engine for their motor vehicle! It's time to bring the industrial revolution to the stone world!