Set in the "Train World" where all citizens are trains. However, among the residents there are special trains that can transform into robots, the Robot Trains! Featuring our 5 train heroes, with special powers: Kay, Alf, Duck, Selly and Victor - and their exciting adventures. Can the Robot Trains save the village from the evil dark forces that be?

The ‘Rail World’ consists of 4 different regions, and four natural energies from the each region - Water, Light, Wind and Fire energy – are the forces that make the world go around, which circulate and interact with each other. In this Rail World, trains and Railers live together in harmony through the power of four natural energies, and also with the teamwork of the Rail Watch members protecting the Rail World safe.