What might be the scariest Hollywood-produced movie of the year isn't airing in theaters – but it will be shown to delegates of the Democratic National Convention in Philadelphia.

Blockbuster movie director James Cameron has helped produce a teeth-rattling short film about the dangers of global warming, deploying skills he usually uses to jolt viewers in his epic thrillers to get them worried about the threat of climate changes.

'Crops are failing. Food prices are rising. … our children are at risk,' says narrator Sigourney Weaver, who starred in the 'Alien' movies.

Weaver later appeared at the Democratic National Convention to warn that Donald Trump doesn't care about climate change.

'Can Donald Trump look these people in the eye and tell them that climate change is a hoax? That he doesn't care about their pain.

'Hillary Clinton, she gets it - she cars.'

The film begins with scary images of burning forests, cracked earth, vicious storms, pollution, and waves slamming into a sea wall.

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This is a disaster! The James Cameron-produced film shows the many calamities linked to man-made global warming

Sigourney Weaver, pictured at the Democratic National Convention, the star of the Alien franchise, is the narrator of the film

Dire warning: Sigourney Weaver, warned the DNC that Donald Trump doesn't care about climate change

He's back! Arnold Schwarzenegger, a Republican, worked with Cameron on the Terminator films

Time is running out! The film features dramatic images of factories spewing out emissions

The film makes life after unaddressed global warming look like a disaster movie

As the images of calamities role, in actor and former California governor Arnold Schwarzenegger weighs in: 'Because of global warming, mountain snow melts earlier each year. And when that happens, the ground dries up earlier too,' he says.

Weaver delivers the films most political anti-Trump lines in the film, which runs just under 5 1/2 minutes.

'It's not reality TV. Make no mistake – Trump's reckless denial of climate change is dangerous. A threat to your livelihood, your safety, your children, and the prosperity of this nation.'

The film is named 'Not reality TV' in another shot at Trump.

Then the films directors let Trump do the talking, with clips of him on the campaign trail ridiculing the science of global warming, notwithstanding the near consensus among climate scientists that the world's climate is rising due to man-made events.

'A lot of it's a hoax – It's a hoax!' Trump says.

'We're going to cancel the Paris climate agreement,' Trump says.

Then he is shown laughing off the threat. 'Speaking of global waring, where is ... We need some global warming. It's freezing!'

One interview subject calls it a non-partisan issue, while a pastor raises religious issues about global warming.

An unnamed woman who lost her daughter in a flood tells her own personal horror story. 'She said, 'Mommy, hold me, I'm scared.' I held her, and then a wave started coming up over me. I felt the water rising and then she went under. And I knew I lost her immediately.'

IT'S ALL DOWNHILL FROM HERE: Austrian-born Schwarzenegger pictured with George Bush snr at Camp David, Maryland. Now he's pitching the dangers of global warning in a film for Hillary Clinton

Then the film switches to Clinton, speaking in uncharacteristically soft tones. 'Our country is ready to tackle the challenge of climate change,' she says.

Former President George H.W. Bush and Pope Francis are both quoted speaking to the dangers of climate change.

'A threat to your livelihood, your safety, your children, and the prosperity of this nation,' says weaver.

An advance copy of of the film was sent out by Clinton's campaign press office.

Cameron has produced and director such films as Avatar, Terminator, The Abyss, and Titanic.

Weaver starred in the Alien movies, while Schwarzenegger starred in The Terminator, Predator, and Total Recall.

Schwarzenegger has longstanding connections to the Bush family, who notably skipped Trump's Republican convention. George H.W. Bush appointed him to head a council on physical fitness. While serving as governor, he appeared with George W. Bush during California wildfires.

In 1991, on a visit to Camp David, he went sledding with then-President George H.W. Bush.

'Not Reality TV' underscores that climate change is an urgent threat to our planet and a defining challenge of our time, and makes clear how high the stakes are in this election,' according to a statement from the Democratic convention press office.