4x15 - Dr. STONE

Senku and his friends are racing at full speed with Stanley, heading for South America, the source of the petrification ray. They welcome the genius geographer Chelsea into their team and push forward with the shortest route to their destination! First, Senku and his friends want to craft a "bike" in preparation for crossing the Amazon. In order to buy time to get the essential material "rubber," they try a decoy operation against Stanley and his friends...! In order to break through Stanley's encirclement, Senku and his friends try to build a bike at lightning speed!