Ed and Riley's hunting plans are interrupted when their new sluice plant needs a major overhaul.

Steve heads to the Top End where a monsoon has swept away roads and created an inland sea, and a Perth heavy haulage crew moves a huge pedestrian bridge.

The Poseidon Crew are poised to secure ground that could hold multi-million-dollar nuggets, Jacqui and Andrew venture into north Queensland, and the Ferals take a gamble on a remote island expedition.

Brent Shannon's gold dream lives or dies at a weigh-in, Shane and Russell venture out on a gruelling 3000km expedition, and new team the Gold Retrievers unearth a bumper payday.

On the cusp of completing their biggest job of the year, Liz leads Team Cook through dust, mud, and barbed wire - meanwhile, Clarry is determined to make target for his Indigenous clients.

It's the spring swap meet as Mike's restoration of a 1966 Parisienne connects him to a Rust Valley oddball and Connor gets charitable.

On Vancouver Island, surfers, scientists, and a Tla-o-qui-aht carver brace for the Cascadia mega-quake - not if, but when.

Railways encounter a multitude of challenges such as crossing valleys, waterways and canyons; we investigate how the most incredible bridges from around the world help to solve a series of problems.

A new member joins the expedition as wild weather strikes and risks the team getting stuck for weeks.

The Poseidon Crew continue their hunt for bush gold, the Gold Gypsies face one of the biggest decisions of their career, and the Victoria Diggers's perseverance could finally pay off.

The Poseidon Crew dodge raging bushfires, the Gold Gypsies set out on a dangerous night-time detecting mission, and Shane and Russell push their fragile wash plant to breaking point.

Big Al races to open up virgin ground, but his operation grinds to a halt when Hiro's Curse returns.

James has a healthy budget for a fun car he can share with his family, but Sheldon and Peter need to find a way of turning a mint imported Beetle Cabriolet into his dream.

Shane and Russell chase lost gold on Mosquito Creek armed with new information; disaster strikes the Desert Diggers; Jacqui and Andrew push deeper into the Palmer River using a new off-road vehicle.

The Poseidon Crew and Neville Perry's sons make their long-awaited return to German Gully, the Desert Diggers wade through mud for a payday, and Sheryl and Simon battle breakdowns to hit their target.

Logger Kevin Wenstob's best day ever turns into his worst when a sudden disaster threatens to shut down his timber claim and his sawmill.

As the Wildcard crew prepare for their first unload of the season, Prue and three-year-old daughter Ellica find themselves out at sea and face to face with a hungry shark.

Chris has to manage his mounting stress after multiple breakdowns shut down his mine.

The Gold Devils set their sights on a record-breaking total, and a gold drought causes one member of the Poseidon Crew to question his future.

The Gold Devils move their multi-million-dollar operation in search of big gold, and the new team of Vince, Bibi and Murray break ground on their dream lease.

The team update a 1977 Daimler Sovereign Coupe. They give it a modern makeover with upgrades to the suspension, ride-height, and colour. But a disaster in the paint booth puts the project in peril.

Two teams of strangers - Terry and Luke, and Kim and Ant - are dropped off miles from the beaten path and must make it back to civilisation without a thread of clothing and only basic survival items.

The Correctional Institution for Women is the largest women's prison in the Philippines, and the rules for the women are tough.

Paul's team deal with hardship and heartbreak as they help up-and-coming prospector Jarrod Crosbie; Jarrod is trying to pursue his dream of abandoning the city to become a full-blown prospector.

The Victoria Diggers' fight for survival could deliver a monster nugget, and the Gold Gypsies fend off deadly snakes as they strive to keep their gold dream alive.

The Gold Gypsies discover a meteorite that could be worth thousands and the Mahoneys chase more big nuggets using Ted's grandfather's old treasure map.