Poldark - aka Aidan Turner - is expected to ride topless through the streets of London, in Britain's inaugural 'Raw Man' festival on the May 4 Bank Holiday this year.
"We want to celebrate raw, swashbuckling manhood as it used to be," said the group's spokesperson Gary Mowbry.
"These days, we all know about the 'modern man' with his partiality to skincare products and organic yogurt. But the traditional sense of man with his leathery multitude of manual skills has been eroded.
"We're very excited to have been given the go-ahead to Britain's first-ever Raw Man festival and we think Poldark would be the perfect poster boy to eulogise masculinity in its raw, unadulterated form," he added.
Poldark's people are understood to have given their backing to the stunt. The actor will draw on his extensive training to ride shirtless atop a stallion on a "lap of honour" leading from Buckingham Palace to Oxford Street.
He will be accompanied by a band playing traditional Cornish pan pipe tunes.
When the parade reaches Hyde Park, organisers hope to involve another iconic period drama actor.
"For our piece de resistance, we're approaching Mr. Darcy [Colin Firth]," explains Mowbry. "We're hoping he'll be up for reenacting his famous Pride and Prejudice scene by emerging soggily from the Serpentine.
"At this point, the music would change from traditional to something modern and sexy, like Mr. Bombastic, in honour of the moment."
Hyde Park's Serpentine lake has previously hosted a giant sculpture of Mr. Darcy, so it's thought the Oscar-winning actor would be happy to take things one step further by getting involved himself.
The event has sparked considerable enthusiasm among Britain's notable "Alpha Male" personalities. Bear Grylls has thought to have volunteered for some sort of cameo role, and the recently unemployed Jeremy Clarkson has also expressed an interest in taking part.
"We're delighted so many luminaries of manhood have got on-board with the campaign," says Mowbry. "This is going to be ode to virile manfulness like no other."
He noted that the organisers have a number of logistical difficulties to overcome, including how to keep their lead men warm in the unpredictable British weather.
"Aidan Turner has said he uses baby oil on his torso, so we're hoping this will guard against the chill," he said. "And we'll have plenty of towels on-hand when Darcy surfaces from the lake."
In an unusual move for the notoriously cautious body, London City Hall has given the go-ahead for the event.
"I'm truly thrilled that London is hosting the world's first fete to manhood," says mayor Boris Johnson. "I only wish I was young enough to bare my chest among this impressive line-up of chaps."
However, unnamed officials have voiced their doubts over the chaos the fiesta will inevitably trigger. "This will cause traffic congestion on an unprecented scale - and on Bank Holiday too," said one. "You wouldn't get women riding topless through the streets of London, so why do men get the right?"
See more about the event here.
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Photos: BBC, Words: Anna Brech