The plot follows Ernest and a history professor as they discover a long-lost Revolutionary War cannon and must protect it from others who want the precious jewels hidden inside.

Ernest shows it to Dr. Abner Melon, a university professor who believes that it came from a giant Revolutionary War cannon called "Goliath".

Dr. Abner Melon had previously been ridiculed by his peers for theorizing that the real Crown Jewels of England were stolen during the Revolutionary War and were actually hidden inside the long-lost cannon.

They are ambushed by historical antiquity collector and Dr. Abner Melon's colleague Dr. Radnor T. Glencliff whom they then lead on a harrowing chase through the countryside.

Things become more complicated for them when British authorities hear about the incident and send a team of secret agents after them to retrieve the jewels.

Just as he is moments away from death, Dr. Abner Melon bursts through the door and hits Dr. Radnor T. Glencliff over the head with the same antique metal plate Ernest found, knocking him out.

[4] Metacritic, which uses a weighted average, assigned the film a score of 28 out of 100, based on 11 critics, indicating "generally unfavorable" reviews.