Jackson is portrayed as a sexual predator in the shocking new film produced by BAFTA-winning director Dan Reed.
The King of Pop is revealed to have preyed on boys and allegedly had “deliberate” and “regular” sex with children.
Channel 4 will be showing the documentary next month amid backlash from Jackson’s family and estate.
MJ’s family have claimed the filmmakers were “not interested in the truth” and said Jacko was “100% innocent”.
Leaving Neverland presents the stories of James Safechuck and Wade Robson, who detail alleged abuse at the hands of the King of Pop at the ages of ten and seven respectively.
Graphic detail is presented in the film as both men tell stories presenting Jackson as a depraved pedophile.
Robson, 36, tells a horrific story of how Jackson would make him go on “all fours” in his bedroom during a five day stay at Neverland.
“I would be on all fours and he would have me bend over on me knees so he could look at my anus”
Speaking in Leaving Neverland, Robson reveals how he was whisked away to Jackson’s California ranch while visiting the US with a dance troupe from his native Australia.
After finding fame as a child Jackson impersonator – having previously met MJ when he was 5 – the King of Pop is claimed to have become infatuated with Wade.
He was staying at Neverland with his sister, parents and grandparents, but when they headed to Grand Canyon for a camping trip he stayed with MJ.
It was during these five days that the sexual abuse started, and he revealed how Jackson would make him perform oral sex on him.
The popstar would then masturbate in front of him – telling the boy to get on all fours.
Robson described himself as being on “display” for Jackson as he exposed his behind to him.
MJ would then periodically stick his tongue into the boy’s anus as he masturbated – with the boy left staring at a cardboard cutout of Peter Pan.
Robson said: “He didn’t ejaculate when he had me perform oral sex on him. But he would masturbate in front of me.
“He would have me go to the corner of the bed, so he would be laying back on a pillow.
“I would be on all fours and he would have me bend over on me knees so he could look at my anus while he was masturbating.
“I was just kind of on display. And then periodically through that, he would come up and stick his tongue in my anus.”
The stay was the start of a campaign of abuse and grooming, with Robson describing how he developed an “us and them” mentality towards his mum and dad.
Robson explained how he and Jackson would spend the days playing like children, having “adventures”, only for it develop into sexual abuse at night as he stayed in Jackson’s bed.
British filmmaker Reed – who put together award winning documentary The Paedophile Hunter – totally rubbishes claims Jackson’s relationships were “innocent”.
The film takes the title from Jackson’s ranch Neverland where he is said to have systematically abused boys including Safechuck and Robson.
Neverland in fiction is the land inhabited by Peter Pan in the lost boys, where children never grow up.
Reed said Jackson cultivated this “Peter Pan” image of a boy who never grew up as he hid his sexual lust for children.
In chilling echoes of Jackson’s Pan persona, a visibly shaken Robson recounts his view as Jacko sexually abused him from behind.
He said: “Right in front of me there was this big elaborate Peter Pan cardboard cutout
“So I was either looking back at him masturbating, or looking forward at Peter Pan.”
And this is one of many exceedingly graphic allegations both Robson and Safechuck make in the four hour long film.
MJ always denied allegations before he died in 2009 aged 50, and he was acquitted of 14 charges of abuse after a high-profile trial in 2005.
His estate also settled out of court over allegations of abuse in 1993, with claims he had been in a sexual relationship with Jordan Chandler, 13.
Jackson’s fans have also responded to the backlash to the new film, which has been accused of cashing in on the dead singer.
Critics who first viewed the film at the Sundance Film Festival described the piece as a “horror” movie.
Safechuck and Robson alleged they were told to keep their sexual relationships with Jackson a secret, fearing they would go to jail if anyone found out.
Previously, director Reed said: “I think it will open a lot of people’s eyes to how child abuse is done in this grooming mode that Jackson practiced.
“I think that is very strongly depicted by these two guys in the film.
“This Peter Pan image disguised a reality that was very different.
“He was very manipulative and very deliberate in his grooming and in his sexual activities that took place over many years.”
Daily Star Online has contacted Howard Weitzman, an attorney who represents Jackson’s estate, for comment about the allegations made in the documentary. He has not responded.
Jackson’s family released a statement addressing the claims after the film was screened at Sundance.
“The creators of this film were not interested in the truth,” the family said.
“They never interviewed a single solitary soul who knew Michael except the two perjurers and their families. That is not journalism, and it’s not fair, yet the media are perpetuating these stories.
“But the truth is on our side. Go do your research about these opportunists. The facts don’t lie, people do. Michael Jackson was and always will be 100% innocent of these false allegations.”