Watch Online Free on Watchseries. When the Earl and his inventor friend Ruth host a Technology Fair, all sorts of amazing inventions find their way to Sodor, including Kenji an electric engine said to be the fastest in the world! But as Thomas worries about the effects of technology, two sneaky thieves and their engine, Sonny try to make off with one of the Marvellous inventions. It will be up to the Steam Team to stop them!