The clip begins showing a hooded man walking into a building with what appears to be a weapon, entering the first set of doors sheepishly.
But as he approaches the second set of doors, having passed through the lobby, the door bursts open and a bouncer flies out towards him.
Taking the would-be attacker by surprise, the giant doorman begins brutalising the assailant, landing powerful punches that knock him to the ground.
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But the savage beatdown continues as the bouncer picks the attacker up before powerbombing him into the ground.
More punches follow but somehow the robber is able to escape and flee the scene – albeit with a sore head.
Footage of the incident, which is believed to have been shot somewhere in the US, made its way online after it was posted on Instagram by UFC star Derrick “The Beast” Lewis.
Thousands have now seen the video, with viewers praising the doorman’s decisive action.
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“He might have gotten away but he's going to be feeling that for a while,” read one comment.
“That bouncer deserves a raise.”
Another said: “Surprised dude could run straight after that many head shots.”
“I haven't seen that kind of ass-beating in a while,” a third chipped in.