Based on the story of the same name from Duke the Lost Engine.Thomas continues his story of Duke. As many years passed, some rescuers begin an adventurous journey to find Duke and reunite him with his old friends Stuart and Falcon. The search grows harder and there is no sign of Duke, but the rescuers were just as determined to find him.

Based on the story of the same name from Duke the Lost Engine.Falcon is sent to take the Mountain Road with Duke. However, he is impatient and does not pay attention to Duke's advice. He winds up dangling from a cliff. There are more problems, as Duke is out of water. Despite this, he clings on to Falcon like a Bulldog and manages to build up enough steam to save him.

Based on the story of the same name from Duke the Lost Engine.Holidaymakers to the Island like riding in Duke's special train "The Picnic". One evening though Duke is too ill to manage on his own, so Falcon and Stuart assist him. Stuart teases Duke about this, but Duke gets his own back on Stuart by playing a trick on him and he proves that he still has a lot of life left in him.