Stranger Things. Tomb of Ybwen

"It's January 1985-the Hawkins crew have survived their battle with the mind flayer, but Will and Joyce are still reeling from the recent death of Bob Newby. After he and Mr. Clarke discover a mysterious map Bob left in a box of old nerdy memorabilia, Will rallies the crew to investigate-but with a blizzard coming, they're afraid to follow"--