Emotions run high as the Kristjanson crew recovers what's left of Trevor's narrow gauge bomber; after his most challenging season ever, Trevor carefully considers his future on the ice.

As hurricane season hits Newfoundland, a skipper races to salvage his cod season and a crane trainee is put to the test.

When a load of dangerous goods sails in, a rookie operator is tested with the offload; meanwhile, a family of fishermen hook the ultimate catch.

The scallop fishing season kicks off on the Magdalen Islands, but day one is marred with equipment failure and rough seas for Captain William while a gale-force storm targets Captain Adam.

A dam goes up against Mother Nature - and loses - in Nebraska, an alpine ice rink roof collapses in seconds in Germany, and what caused a toxic wave to wash through a community in Tennessee?

Richie and Kimberley - the owners of 1870 - learn the hard way that all that glitters is not gold, and old business partners Donnie and Leigh come face-to-face in a dramatic screaming match.

Crippling permit delays force the Poseidon Crew in search of bush gold to survive, the Gold Gypsies discover a bounty of fine gold, and the Dust Devils' gamble ends in a huge mechanical failure.

Shane and Russell rebuild a wet plant in a bid to rescue their season, the Victoria Diggers are forced to dig a neighbour's lease, and brothers Marcus and Linden are stranded in the Outback.

Mike takes on a 1967 Cougar with a tragic past, the boys battle it out at a swap meet, and the completion of the Model T gets Avery thinking.

Mining season has just begun as newcomer Big Al gets off to a great start, Bernie struggles with an inexperienced crew, and best friends Ken and Guillaume can't find any gold at all.

The Dust Devils' entire operation is forced to shut down as The Poseidon Crew's dig zone floods, forcing them to abandon their deep pit mining and defend their detecting patch from rival prospectors.

The Gold Gypsies make a discovery that could catapult their season, the Victoria Diggers hit red tape - pushing Neville to the edge - and the Goldtimers confront gold thieves.

Log barge crews push through cold and chaos on Hecate Strait, while commercial diving students face the toughest training on the planet.

The $50,000 dryblower at the 1870 mine is generating much-needed gold, and Ritchie heads to the Gold Coast to try to sell a showpiece gold nugget for $30,000 to one of his cashed-up socialite mates.

Mining season has just begun as newcomer Big Al gets off to a great start, Bernie struggles with an inexperienced crew, and best friends Ken and Guillaume can't find any gold at all.

The Gold Devils race against the elements, Jacqui and Andrew push to new extremes, and mechanical issues leave the Ferals divided.

Alan and Salty hit a dead end in the remote Kimberley region, Vince, Bibi and Murray are forced to break new ground in Victoria, and the Gold Retrievers struggle with their misfiring wet plant.

Ken's rush to sluice rocky ground breaks his sluice, Dennis chooses between his drive to mine and his loyalty to Cam, and Karl's cut floods and puts his season in jeopardy.

Leigh outfoxes Donnie and Dennis and wins the rights to Matt and Damo's gold-rich land, and can Gold Coast socialites Richie and Kimberley get their new washplant to site without damaging it?

In rural Leake County, Mississippi, meth arrests keep the small jail in rotation. Sheriff Randy Atkinson battles to stop drugs from entering as inmates attempt to smuggle contraband inside.

Brent tests the mining skills of his late friend Neville Perry's sons, a mechanical fault stalls the Wanderers' excavator, and the Mackies make a risky investment on new ground.

Old Timers Ray and Paul return to where they removed a massive boulder to see if it's hiding gems, and Anthony and Jodie are back at the Gemfields with renewed vigour and their families.

When Bruce learns his mum has had a stroke, he and Juanita rush to her side leaving Tiger and Tom in charge; with the season's fate hanging in the balance, the crew finally reach the Cape.

Machine breakdowns threaten to cripple the Gold Timers' season, and the Ferals r-join the hunt and face a medical emergency as Linden finally breaks his gold drought.