Dunkin' Duncan

Skarloey, Rheneas and Rusty arrive at the slate mine to help with an important operation with the incline, but Duncan is impatient and wants to get the work done faster. Thomas asks Rusty and Rusty tells Thomas about Duncan being impatient. Despite warning from the others that safety should come first, he goes out of his way to prove them wrong and to show off his strength and speed. But disaster strikes when the crew forget to uncouple him from the trucks at the bottom of the incline. Fortunately, his driver jumped clear. A dip in a muddy pond soon makes Duncan apologize for being bossy.

Thomas, Skarloey, Rheneas, Rusty, Duncan, The Fat Controller