Every Single Thing You Need to Know About Stranger Things Before Watching Season 2

Will's very frazzled mom, Joyce (Winona Ryder), returns home the next morning after a long shift at work and discovers that her son is missing. She and Will's brother, Jonathan (Charlie Heaton), frantically call around searching for Will, but to no avail. Eventually Joyce reports the disappearance to the town's police chief, Jim Hopper (David Harbour) — a slacker and alcoholic who refuses to believe Will vanished.