The return of I'm A Celebrity... Get Me Out Of Here! will see this year's campmates walk a plank hundreds of feet in the air and complete a challenge involving castle critters.
The stars will be split into two groups as they battle it out to win the keys to the castle to decide who will stay in the main camp with food and a beds, and who will be sent to "Castle Clink" and given basic rations.
The show's co-host Ant McPartlin said: "This year is going to be tougher than ever, all the celebrities will face gruelling challenges on their way to the castle."
Broadcaster Louise Minchin will face Emmerdale star Danny Miller, while radio DJ Snoochie Shy will compete against music producer Naughty Boy as they all attempt to walk across a wooden plank 213 feet in the air above a quarry lake.
The two winners of this challenge will be given the opportunity to choose two celebrities from the other group to join their team.
The other group then have to battle against one another in pairs, with choreographer Dame Arlene Phillips and former footballer David Ginola put together, and Olympic diver Matty Lee and Paralympic gold champion Kadeena Cox paired up.
The celebrities will try to work together to unlock two flare boxes, but they will be restricted by the "hell holes" which they have to put their arms through.
All of the famous faces will later gather at the "turrets of terror", a three-level structure positioned in front of Gwrych Castle, where the first trial of the series will be held.
Broadcaster Richard Madeley and singer Frankie Bridge are chosen as the first celebrities to complete in the trial following a public vote, and the winning team is allowed to select who will represent them.
Madeley and Bridge will have to battle it out to reach the top of the turrets to retrieve their key to the castle door, but they will face locked doors and "castle critters" along the way.
The series is returning to Gwrych Castle near Abergele in North Wales for a second year due to ongoing coronavirus travel restrictions, preventing filming at its usual location in the Australian jungle.
I'm A Celebrity...Get Me Out Of Here! kicks off on Sunday 21 November at 9pm on ITV and Virgin Media One.