Join new host and former contestant Fiona Falkiner as four new Australian families attempt to achieve their weight-loss dreams.
The contestants come face-to-face with the full extent of their health issues at the first weight-in and compete in their first team challenge.
The trainers weigh-in after living with and eating like the contestants for a week. The results leaving both the trainers and the contestants shocked.
The families face their first weigh-in after a week in the house with one contestant stunning the competition.
The contestants face the first elimination of the season and the fall-out causes tension amongst all the families.
One contestant wins a $20,000 prize, but the reward comes with a twist. Meanwhile, the winner of 'The Gates of Hell' challenge is forced to make a decision that could leave a fellow contestant without a future in the house.
One contestant is forced to make a hard decision after a tempting life-changing offer. Also, the teams face-off in mud filled tug-a-war challenge.
The second contestant is sent home. Meanwhile, Fiona pays a surprise visit to the camp and reveals it is time for The Game.
Some special guests stop by to help the trainers push the teams to their limits. Also, the fallout from temptation creates tension between the trainers and contestants.
The team are pushed to the limits in their last gruelling work out before yet another daunting weigh-in.
The families say goodbye to another contestant and tension rises when it seems like one team is not training hard enough.
After winning The Game, the red team find themselves on a winning streak but their agorance soon creates tension within the house.
It is the most intense weigh-in of the season yet as the challenge-winning team use their power to nominate who is up for elimination.
One team has a big breakthrough while another begins to fracture. Also, the camp says goodbye to another popular contestant.
The winners of the Memory Game reveal their power: the chance to bring back the last eliminated contestant.
The families face a difficult challenge that could leave one team with a huge advantage and the others without a trainer heading into weigh-in.
In the aftermath of yet another elimation family ties are tested when the elimated contestant lets their true feelings about her family.
The remaining members of Shannan's blue team are tested during a gruelling training session with the NSW Waratahs Rugby Team.
After falling below yellow line two contestants are forced to nominate one family member each for elimination. Meanwhile, one contestant gets a happy surprise at the weigh-in.
The teams are put to the test with a French pastrie themed temptation challenge. Which contestants will risk the calories to win a power over the other contestants?
The contentants face the most difficult last man standing challenge yet in which they must float on blocks floating on a pontoon over water.
The winner of the last man standing challenge recieves a huge advantage and the contentants face their first weigh-in without their families.
The families compete in a trivia-themed challenge called 'Stacks On' where a contestant has the chance to load another contestant with 10 kg of water if they answer a question correctly.
The contestants are visited by Josh Wood, a quadriplegic extreme sportsman with an inspiring story of courage and determination.
Two contestants manage to put on weight and consequently find themselves up for elimination creating drama within the families.
An intense weigh-in sees two of the most popular contestants up for elimination, with their fate in the hands of one contestant.
The contentants face yet another temptation challenge and one judge is sent packing after a shock elimation.
The remaining family alliances and friendships are put to the test during an emotional weigh-in where two contestants find themselves below the yellow line and up for elimination.
Fiona surprises the remaining contestants when she announces that it is day that they have all been waiting for- makeover day.
In a surprise turn of events, Fiona announces that the eliminated contestants have also had makeovers, to the shock of the remaining contestants and the trainers.
One contestant gets the surprise of their life when their partner pops the question and the makeovers continue of the eliminated contestants.
For the first time in the competition, the two contestants up for elimination make an emotional plea to be sent home to save the other.
The eliminated contestants arrive at the sandpit to train hard to gain a spot back in the competition. Plus never seen before audition footage and the biggest challenge yet.
The eliminated contestants return to compete in a sandpit training session to re-enter the competition. For one contestant, though, it proves too much.
After completing the sandpit challenge the eliminated contestants knowledge of calorie intake is tested to determine who will be the lucky three to return to the competition.
The remaining contestants compete in the 'Shed Your Weight' challenge, in which they must wear a backpack containing the amount of weight they have lost during the competition, for a place in the final.
The contestants face their last- and hardest- training session with their trainers, the last round of temptation and one last challenge which sees the winner gain a ticket straight to the finale.
Emotions run extra high as the contestants face their final elimination before the grand final and families are forced to compete against each other.
After weeks of intensive competition and hard work, all of the contenstants gather to show Australia their amazing results and the winner is announced.