Fireflies is an Australian television show which aired on the Australian Broadcasting Corporation in Australia and RTÉ One in Ireland. It debuted on 7 February 2004 and screened as 22 episodes. The series was set in the fictional country town of Lost River, population 487. It was centred on the lives of a group of volunteer firefighters, during the hottest, driest summer in decades. The theme song "Beautiful Feeling" was written and performed by Paul Kelly.

George and Ursula now have a son, George Junior, so Ursula's mother arrives to try and take them back to "civilization".

Early 20th-century adventurers find themselves fighting for survival after their hot-air balloon crashes into a remote part of the Amazon, stranding them on a prehistoric plateau.