The hit Netflix series “Stranger Things” is the focus of a lawsuit filed Tuesday, with the show’s creators, the Duffer Brothers, accused of stealing ideas for the show, Deadline reports.

“Charlie Kessler, who directed the short film ‘Montauk’ that debuted at the 2012 Hamptons International Film Festival, filed a lawsuit Tuesday in Los Angeles Superior Court claiming he pitched the ‘Montauk’ concept to Matt and Ross Duffer in April 2014 at a Tribeca Film Festival party and later presented ‘the script, ideas, story and film’ to the duo that they allegedly used to develop their hit series,” Deadline reports. “Kessler says the Duffers used the working title ‘The Montauk Project’ during the early stages of ‘Stranger Things,’ which was originally set in the Long Island town of the title (a setting later changed to Indiana).”

The report adds: “Kessler’s ‘Montauk’ storyline involved a missing boy, a nearby military base conducting experiments on children and a monster from another dimension that looks like a toy.”

Variety notes: “Neither project originated the idea of mysterious happenings surrounding a government facility on Long Island. A book, ‘The Montauk Project: Experiments in Time,’ was published in 1992, and tells of repressed memories of secret government experiments at Montauk’s Camp Hero. Versions of the story [have] circulated on conspiracy sites for many years. Some of the ‘Stranger Things’ cast have alluded to the connection, saying in a Wired interview that the show was based on stories about Camp Hero.”

Deadline quotes Kessler’s lawsuit saying: “After the massive success of ‘Stranger Things’ that is based on Plaintiff’s concepts that Plaintiffs discussed with Defendants, Defendants have made huge sums of money by producing the series based on Plaintiff’s concepts without compensating or crediting Plaintiff for his Concepts.”