Relativity Media has acquired an untitled spec screenplay from writer Joe Gazzam, who signed on to write the Cliffhanger reboot for StudioCanal in May.

Details are being kept under wraps, but the plot is described as a Man on Fire type of story that centers on a father and son, with a sci-fi element in place. Relativity emerged victorious in a competitive bidding war for the script, which was sold in a six-figure deal that closed earlier this week.

Alan Gasmer, Peter Jaysen, and Ahmet Zappa and Devon Schiff are producing, although no production schedule was released at this time.

Joe Gazzam also sold his script Shadow Run to Sony Pictures back in February. He was hired back in 2009 to write the Barbarella reboot, which still hasn't gotten off the ground yet.