Buffoonish Ernest and his dimwitted pal Abner unearth a huge cannon reputed to contain the crown jewels of England.
| Actor | Role |
|---|---|
 Jim VarneyErnest P. Worrell | Ernest P. Worrell |
 Ron JamesAbner (as Ron K. James) | Abner (as Ron K. James) |
 Tom ButlerDr. Glencliff | Dr. Glencliff |
 Linda KashNan | Nan |
 Frank C. TurnerVan Driver | Van Driver |
 Lillian CarlsonReceptionist | Receptionist |
 Alf HumphreysSurgeon (as Alf Humphries) | Surgeon (as Alf Humphries) |
 Mitchell KostermanThug 1 (as Mitch Kosterman) | Thug 1 (as Mitch Kosterman) |
 Alan RobertsonHead Man | Head Man |
 Dave 'Squatch' WardConstruction Worker 1 | Construction Worker 1 |
| DDuke ErnsbergerFrank | Frank |
| JJeffrey PillarsJoe | Joe |
 Denalda WilliamsVan Driver's Wife | Van Driver's Wife |
 Alex DiakunLibrarian | Librarian |
 Dee Jay JacksonConstruction Worker 2 | Construction Worker 2 |
 Charles SiegelChancellor | Chancellor |
 George JosefThug 2 | Thug 2 |
 Tony MorelliThug 3 | Thug 3 |
 Russell RobertsSuits Commander | Suits Commander |
 J. B. BivensSecurity Sergeant | Security Sergeant |
 Ernie JacksonTruck Driver | Truck Driver |