Rock 'n' Roll Rescue

Plot
Rusty is very concerned about Duncan rocking 'n' rolling whenever he goes along the line. Duncan doesn't listen to Rusty. But when Duncan crosses the viaduct, a small stone falls from it. Duncan's crew realise that the viaduct's stonework is loose in some areas, so they tell Rusty. Rusty is pleased that, if Duncan didn't rock 'n' roll, the problem might've never being spotted.

Featured characters

 * Duncan
 * Rusty