Robot Trains - Season 1 - Eps 2: Duke is a Liar
Duke returns to the Train World and lies to everyone that Kay is lost due to an unfortunate accident. But Kay also makes it back, and Duke's lie is revealed! To fulfill his evil scheme, Duke forcefully tries to take over the Train World. But with his last ounce of strength, Kay stops Duke using his lethal combat technique, Maximum Overdrive.
About Robot Trains

Title: Robot Trains
First Air Date: 2015-02-26
Last Air Date: 2019-05-19
Status: Ended
Rating: 5.7/10 (from 3 votes)
Language: KO
Seasons: 2
Total Episodes: 84
Network: Unknown
Genres: Animation, Kids, Action & Adventure, Comedy, Sci-Fi & Fantasy, Family
Production Companies: CJ ENM, Union Investment Partners, Woori Investment Co.
Synopsis
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?