Thunderbirds Are Go! (2015)

S1E7 Runaway

In Japan, a high-speed train experiences a bizarre malfunction, spiraling out of control and unable to halt. Brains devises a strategy to rectify the situation before a catastrophic collision happens; however, he must board the speeding locomotive to execute his plan. With Scott's help, they manage to get Brains onto the train, only to discover that the issue is far more intricate than they initially anticipated.