The King Mystery is a special slated for release in September 2018.


DJ is over the moon when the King Darwin chooses him and friends Hayden and Blaise to rebuild new part for Ulfstead Castle. During their latest adventure, the Steam Team meets Niria, a bubbly American engine, and Josh, an older steam locomotive with fascinating stories to tell. Meanwhile, Carlos, Casey, and Zeke are stunned when they encounter three new engines, Clarke, Aleasha, and Kyona, who are even faster than they are! But disaster strikes when Josh goes missing.


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