When he first filed the complaint back in April of 2018, Kessler claimed that he pitched a concept and provided materials to the Duffer brothers that shared various characteristics with Stranger Things, and he believed they legitimately stole his idea in order to create their Netflix series.
The day before Matt and Ross Duffer were expected to show up in court for trial, the plagiarism accuser Charles Kessler officially withdrew his lawsuit, thus bringing the headline-making legal battle to an end.