Harold The Helicopter Is Making Fun Of Mavis, But As It Turns Out, Mavis Wanted To Go Flying Just Like Harold The Helicopter. When Thomas Arrives, He Discovers That Mavis Or Diesel Engines Can't Fly. But He Imagines Something Fun. Meanwhile, Mavis Wanted To Be A Superhero, Which It's Called Super Mavis. When Thomas Leaves, Harold Tells Mavis That They're Getting For Flying Adventure While Mavis As A Superhero Diesel Engine. And Off They Fly.
When Sir Topham Hatt Arrives, He Discovers That Mavis Is A Superhero Diesel Engine And Flying Around Much To His Surprise. Harold & Mavis Are Having Fun Flying Around On Sodor Railway, Much To They're Laughter.
