Stranger Things Recap: Seasons 1–4 in One Go

Eleven escapes, and the gang discovers the Upside Down and the Demogorgon.

Will is possessed, the Mind Flayer grows stronger, and Eleven closes the gate.

Billy becomes a host, the Mind Flayer returns, Eleven loses powers, and Hopper is presumed dead.

Vecna kills through mind attacks, his identity as One is revealed, and Hawkins cracks open.

Hawkins has fallen and the last battle approaches before Season 5.