The Avengers are forced to "party" with Ultron when he seeks to disassemble the team by taking control of Iron Man's armor and enact a nefarious scheme to take over the world.

With the help of his new friend Gator, Percy learns all about being brave as Thomas spots some suspicious giant footprints at the Sodor Clay Pits.

Thomas discovers mysteries of the past and must help a new friend, save a ruined castle and may even find some treasure when Sir Robert Norramby comes to the Island of Sodor.