Based on the magazine stories "Hello, Thomas!" and "A Bump on the Line."

Thomas is late after taking some children home when their school bus breaks down and Thomas is afraid he will be replaced. He is very disappointed when the rails on his branch line buckle and he is sent to shunt in the yard while Bertie the bus takes his passengers until the bumpy track is repaired.

Based on the magazine stories "Trouble in the Harbour Yard" and "Bumps."

Percy and Duck are struggling to cope with their work at the harbour, so help is called in. They are horrified when Diesel returns. They are forced to give him a chance, but have to decide whether to speak up when he acts roughly and causes trouble. Diesel, thinking he can get away with anything, carelessly pushes several trucks into the sea.