As the gold season reaches the halfway mark, Rick Fishers teams up with old-timer 'Biggy' to explore a mysterious site outside of Laverton. Acting on a tip-off, his season's fate is in Biggy's hands.

As bushland miners the Dirt Dogs stumble onto what could be the find of a lifetime, Henri and Kellie battle brutal weather and each other. Meanwhile, the Gold Gypsies strike a deadly threat.

Rick Fishers pays it forward to a couple of rookies, Ted and Lecky put some hard graft into some hard rock, and when the Dirt Dogs catch some poachers red-handed, things turn a little 'Western'!

Ted and Lecky unearth an ancient mystery that could lead to a hidden treasure trove. Meanwhile, Henri and Kellie are running out of supplies as they race towards the season's finish line.

As the wet season looms, the bull catchers race to make money; unflappable Kurt finally meets an obstacle he can't sidestep when his buyer falls through, and Clarry is nearly ready for retirement.

On a muddy recovery job, Dale proves that size doesn't matter when it comes to getting the job done.

While Dale struggles to run the family farm and his business, Gripp gets a call from his sister after a terrifying crash and races to help.

As wildfires rage, Dale battles smoke, heat and steep mountain passes to help his friends... until the road fights back.

Dale comes face-to-face with some hard medical truths, and a diabetic crisis in the backcountry leads to a life-or-death recovery for Luke.

After a brutal year of pain and pushing through, Dale pins his hopes on a life-changing surgery while Gripp steps up to carry the load.

Elite search-and-rescue crews train for the worst, urchin divers battle the market, and a volunteer races to save a baby owl.

Crane operators load millions of pounds of timber in a cold snap, a halibut fisher chases quota, and a diver visits a wolf eel.

Whale rescuers, Coast Guard divers, and clean-up crews race the tides to protect BC's 27,000 km of coast from ghost gear and plastic waste.

Scientists track transient orcas off California, a tugboat hauls logs through BC narrows, and a diver finds a Giant Pacific Octopus.

On BC's remote north coast, a bush pilot, an Indigenous rescue crew, and commercial divers all chase a living in unforgiving water.

Permit delays devastate the Poseidon Crew's hope of a massive payday, a torrential downpour forces Shane and Russell to evacuate their dig site, and the Ferals finally uncover a rich patch of gold.

As Jacqui and Andrew are targeted by potential gold thieves, Marcus, Linden and Dale hunt in ground close to the site of the biggest nugget ever found in Western Australia.

The Poseidon Crew finally start digging the legendary Catto's Paddock in search of a multi-million dollar nugget, and the Goldtimers struggle to keep a borrowed dry blower running.

A robbery at the Gold Retrievers' camp heaps more pressure on Brad and Chris' partnership, Marcus and Linden finally hit a rich patch of nuggets, and the Goldtimers call in reinforcements.

The Ferals are on the brink of collapse, Shane and Russell could hit the richest gold patch of their season, and Jacqui and Andrew battle back-breaking ground that could ruin their latest deal.

The Alaskans continue their spring projects. From the construction of buildings that will aid in the growing and storing of food, to hunting that will keep their bellies full.

In summer, the long days give Alaskans the opportunity to innovate their ways of harvesting resources, and the endless sunlight affords them the ability to gain knowledge of the landscape.

In the face of harsh weather, an emergency repair threatens vital deliveries and a veteran skipper has one last chance at a big catch.

The harbours are bustling and it's all hands on deck; as countless ships arrive, one fisherman fights to head out before the season closes.

There is chaos on both land and sea as a massive ship prepares to sail with millions in cargo, and a skipper faces a potential season-ending disaster.