Robot Trains Season 3 Episode 1 A New Threat

Duke, Mos and Dos are up to their old tricks: this time they manage to steal energy balls from Waterland. As they are spotted by Railwatch, they run away dropping accidentally the energy balls in the water. Railwatch gather the stolen energy balls underwater thanks to a special gadget by Genie. Meanwhile, Train X has a new trick up his sleeve, something which he calls the shadow energy.