Thomas & Friends S03E08 - Diesel Does It Again

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.