Following yesterday's epic 'race against the elements', it's back to business as usual as the celebrities play to earn stars.
Viewers took to the ITV reality show's official app to vote for who they wanted to face the next Trial, 'Space Your Fears'.
Once again, current jungle Prime Minister Stanley Johnson was excluded from the poll on medical grounds.
Ant and Dec visited camp at the end of tonight's episode and teased Rebekah Vardy that it 'might be you', before confirming that Iain had topped the vote.
The challenge will see the radio host conquer heights as he crosses a zipwire in a mini spaceship, named the 'Bush Blaster 1'.
In addition to reaching out for stars high above the jungle ground, he'll also have to search compartments of the vessel, full of cockroaches and mealworms.
"It’s a sci-fi spectacular as one celebrity reaches for the stars," Ant and Dec commented.
"Terror is the final frontier when you Space Your Fears."
The latest Trial will be Iain's fourth, and the second he's faced as a result of the public vote.
Viewers chose him to enter the 'Temple of Gloom', but he quit the task after panicking in an underwater chamber.
He also helped the boys to victory in Sunday's live Trial, a parody of Ant and Dec's Saturday Night Takeaway.
This gave Dennis Wise and Jamie Lomas a head start in yesterday's all-day race, which they eventually won, earning a slap-up feast for the boys - while the girls were left with rice and beans.
Tune in to ITV tomorrow night at 9.00pm to see how Iain does aboard the Bush Blaster.