2100 A.D. The world has entered a new era of ultra-high-speed railways. The World Railway Conference has introduced the Laser Rail, a completely new mode of travel in which trains are no longer restricted to the ground. To operate on the Laser Rail, the Train Base is established. Here, trains from around the globe are equipped with artificial intelligence and robotic bodies. Thus, the Train Heroes are born. Within the Train Base, these Train Heroes undergo rigorous training. Occasionally, they are called upon to assist in disaster rescue and relief operations.