The 90-minute Channel 4 film portrays what would happen if the third in line to the throne was abducted while serving as a soldier in the war-ravaged country.
It includes the actor playing the role of Harry having an unloaded gun pointed in his face before one of his captors pulls the trigger.
He is also forced to appear in videos for the Taliban and al-Qaeda, urging troops to pull out of the region.
"If you don't, they will behead me," he says.
Harry's tour of Afghanistan in 2008 was cut short after a media blackout to avoid him being a target was broken some 10 weeks into his time on the ground.
The prince is reported to be keen on touring Afghanistan again as an Apache helicopter pilot but still has another 18 months of training before being deemed ready for such a mission.
Several newspapers reported, via undisclosed sources, that Prince Harry was "appalled" and "furious" over the made-for-TV movie.
"He was made aware of the film on Tuesday and you can imagine his reaction - he was furious," a source told The Daily Mirror in a story under the headline TALIBAN IT.
"He is a professional soldier committed to fighting, and there is no way he would let a stupid film deter him from that.
"But he does not want to speak out about it himself because that would just be giving it more respect and publicity than it deserves."
Nearly all of the major British papers voiced their disgust at The Taking of Prince Harry, which is to be aired this month.
Former head of Scotland Yard's royal policing squad Dai Davies denounced the production as "foolhardy".
"I cannot think of anything more crass and stupid," he said.
"Potential lunatics may be encouraged or even stimulated. I condemn it unreservedly."
Hamish Mykura, Channel 4's head of documentaries, said the subject matter was justified and believed it did not increase the risk of high-profile kidnappings.
"It is a very live and real issue and one that we think is well worth exploring," he said.
