Ciarran Stott

Hosted by Brihony Dawson and filmed in Buenos Aires, Argentina, The Challenge Australia will see an algorithm randomly pair challengers to compete in gruelling physical contests, test strategies, survive eliminations, cutthroat alliances and steamy hook-ups to win daily challenges and eliminate their opponents.

Each Challenge pits numerous cast members from past seasons of reality shows against each other, dividing them into two separate teams according to different criteria, such as gender, which show they first appeared on, whether or not they're veterans or rookies on the show, etc. The two teams compete in numerous missions in order to win prizes and advance in the overall game.