Thomas blows up some deeper parts of underground, and makes weak surface. While everything is going on, you can meet some new friends!
Working titles for this film we're, The Lesson With Caverns, and The Legend of The Pirate Ship. Duck, Oliver, and Flying Scotsman all work together. But they're all green.
When Thomas blows up the bridge, Thomas' body is replaced with Bert's. Take 'N' Play Rex makes a cameo. When Ryan takes the flatbeds back to the mine, he derails off camera.
Thomas, Ryan, Bert, Mike, Percy, Oliver, Duck. The rest of the engines are most likely to show up.