Diesel wants Sir Topham Hatt to bring him to the renowned Great Railway Show instead of Henry. A key moment from the upcoming DVD, The Great Race, Diesel wants to prove he is the stronger engine by disguising Den & Dart in crates so it seems like he is strong enough to pull such "heavy" cargo. Thomas & Friends Wooden Railway Diesels in Disguise is a 3-pack which includes Diesel with a plastic crate cap and Den & Dart vehicles in crate disguises. Magnets let you attach other Wooden Railway train engines or tenders (sold separately and subject to availability)! Features realistic details -Helps develop gross motor skills, sensory skills & reasoning skills.