The contestants have finally made it to the final leg of their New Zealand Adventure Race.
The trainers and Hayley can hardly bare to watch the Chopper Jump.
Hayley explains that the Green Team receive the power of the fridge and that they've won themselves a makeover.
Each team will be given a map that will lead pairs to the four challenges before finishing the race at the chopper.
The contestants are told that the pair with the best weigh-in results will get the first pass.
In this challenge, the contestants at home will be the mind, while the contestants in the Biggest Loser house will have to hold a basket off the ground.
The Orange girls open the fridge to reveal a bombshell; they must choose one person from each team to pack their bags and go home immediately and return for weigh-in.
Hayley Lewis in the weigh-in room
The contestants hear that the house will be split into two groups, parents vs. kids.
Hayley Lewis in the weigh-in room
The contestants face the most gruelling obstacle course on the planet, 'The Spartan Race.'
Hayley explains that the Green team have won a progress weigh-in this week and it means they can jump on the scales anytime during the week.
Hayley explains that a weigh-in shake-up means that the trainers will be involved in the decision of which contestants are the next to head home.
Hayley introduces the contestants to the latest challenge.
The girls in Pink are both excited and confused by the surprise visit pass that they have received from the fridge.
Hayley gets the contestants ready for the weigh-in.
It's the contestants worst nightmare, when the contestants hear that they will be competing in The Biggest Loser 21km half marathon and they will be tethered together.
Hayley welcomes the contestants to their first competitive weigh-in.
The contestants face the most epic challenge ever as they have to work together to dragrace against a fighter jet plane and drag a 1 tonne skip down the runway.
It's a new year