A fatal accident at Cockatoo Creek Resources (CCR) nickel mine not only shuts down the pit, but propels the parent company, London-based Albion Energy (AEL) into panic mode.

With the nickel mine back on track and the bank's foreclosure action briefly averted, Brian finds that CCR's revived 19th century gold mine is under threat when concerns are raised about a nearby creek.

The team attends an annual Western Australian mining forum. Brian finds himself called away to CCR's new gas field to deal with a fresh water bore the local Indigenous community fears will harm its sacred sites.

Caz's pursuit of rare fossils finds her caught up in a terrifying situation that not only turns her world upside down but also draws her closer to Shane.

An unknown, radical environmental group called Earth Warriors threatens the opening of CCR's gold mine. With the hours ticking down, Megan, Max, Shane and Caz urgently try to avert the threat.