Tao's Secret Weapon

S1, E2: After being captured by a group of Nomads, Noah is still trying to figure out how far back into the past he is. The Nomads are a small band of youths who are pursued by an older group called the Protectors, led by Tao. The Protectors capture Nomads and force them to mine Thunderstone. A sensing device, the Sentinel, is Tao's newest weapon for tracking down the Nomads. Back in North Col, Noah's family try to discover what has happened to him.