14 celebrity recruits are dropped into the harsh and unforgiving Jordanian desert, surrendering themselves to the brutal SAS selection course.
The 13 remaining celebrities face a day of extreme training that claims two voluntary withdrawals and one medical withdrawal.
The 10 remaining recruits are tested with tasks requiring pinpoint accuracy and precision, in two life or death scenarios.
A night beasting claims another withdrawal. The recruits come under attack and capture before being facing each other in hand-to-hand combat.
The nine remaining recruits learn the hard way about drone warfare. A mountain rappel almost ends in disaster.
An aggressive game of murderball pushes the recruits to their limits before a shock VW and a backbreaking grunt task resulting in an unlikely hero.
A rare morning of good morale is destroyed by a worrying accident before a high-pressure tactical driving task.
Three days to go and six recruits left to show courage in an excruciating rope hang and water to Blackhawk exfiltration before emotional letters from home and a night beasting that claims another number.
Just five recruits remain as they're sniper skills put to the test.
The final four must combine all the skills they've learnt to a three-phase final mission, to pass the course, and make selection.