El, Will, Mike, Lucas, Dustin and Sam have outgrown their dorky-cute phase. defeated the Spider Monster in the food court of the Starcourt Mall and thwarted a Soviet plot in the shopping center’s basement. “Stranger Things 4” is set in 1986, six months in TV-time since the gang from Hawkins, Ind. After three years between seasons, “Stranger Things” is back with an older cast and a new threat: adulthood.