Based on the story of the same name from The Little Old Engine.Gordon advises Sir Handel to get out of work by pretending to be ill. leaving Peter Sam and Rusty, a new diesel engine, to take over his work. However, some trucks mistake Peter Sam for Sir Handel and crash into him at the incline.

Based on the story of the same name from The Little Old Engine.Skarloey finally returns home after being repaired and meets Rusty. Peter Sam, still recovering, informs him of the newest arrival a careless and bad-tempered steam engine named Duncan. Soon, Skarloey is sent to Duncan's aid when he is stuck under a decrepit tunnel.

Based on the story of the same name from The Little Old Engine.Rusty and the workmen have repaired the railway line while Skarloey was away being mended. He is concerned about Duncan, who ignores his warning about a broken section of track. With a tip from James, Duncan is off on his own and he is soon "rocking n' rolling" along the rails. Rusty grudgingly comes to the rescue.