With their golden goal far from reach, Todd sets a new plan to go searching for trenches that could lead them to a gold vein. Todd's first mistake? He brings Matt along on the search, while the rest of the team takes a break from making gold to battle a major fire in camp! When Todd and Matt fail to come back from their trek, the team goes off in search of their missing comrades.

Todd's twin brother, Trevor, arrives at camp to collect money Todd owes him. Todd tries to play poor just as the crew reveals a significant gold vein in one of the trenches. With Todd's debt to his brother hanging over his head, he makes Trevor an unbelievable deal that can only be described as "Classic Todd". But the rest of the Shotgun crew isn't keen on sharing their gold with Trevor. It will be up to Todd to keep the crew motivated, and his brother out of the way.

As the season draws to a close the Fools drive hard to reach their target of 100oz. But while Todd chases the vein – he's served with a government notice that says he must do major work to the mine site in order to continue...and spend thousands of dollars that he doesn't have. To make matters worse, Matt makes a costly mistake with the hammer mill that brings the entire operation to a standstill. It will be up to Jimmy to solve the problem – but this time, Straw Lake's very own MacGyver doesn't even think he has what it takes to get them up and running again.