Robot Trains (2015)

Season 1: Episode 26

Kay arrives at the Central, but the atmosphere is somewhat different than before. His friends act weird and seem to be afraid of him. Kay hears from Duck of what he had least expected. In this world, Kay is a betrayer who interrupted the opening of the tunnels and shut down Duke's engine. In a nutshell, it becomes clear that Kay had arrived in a whole different Train World.