Maggie and PJ are in serious trouble when an investigation into a suspicious goldmine goes wrong, and they find themselves trapped. Two newcomers in town, Matt Kinsella and Jamie Burgess claim that the goldmine is theirs, but old Hec O'Farrell, who has been working the mine for as long as anyone can remember, insists that Matt and Jamie are the trespassers—and what's more, they've stolen his gold dust. Dash and Adam discover Hec's fellow prospector, Bert, bashed, and PJ is happy to assume that Hec beat up his mate and took his own gold, hoping to pin the crime on Matt and Jamie. Tom and Dash however, are not so sure—Hec's friendship with Bert is legendary and why would he risk it for such a small amount of gold? Bert is also denying that his mate had anything to do with his bashing. PJ is still sure the case begins and ends with Hec, and takes Maggie out to talk to Matt and Jamie about the license to the mine. While they are there, Matt and Jamie suddenly discover a huge gold nugge