Forget the Upside Down — the greatest mystery of the Stranger Things universe is why Hopper (David Harbour) and Joyce (Winona Ryder) can't just hook up already. Hawkins' gruff chief of police and the town's most dedicated mother have known each other since they were just a couple of rule-breaking teens, and they've bonded in adulthood through the most universal parenting experience of all: unraveling a small town's tangled web of government conspiracies.