When it is discovered that Will is still being influenced by entities from the Upside Down, his friends and family learn there is a larger threat to their universe from the Upside Down.
Potom, čo zistia, že Will je stále pod vplyvom bytostí z Upside Down, sa jeho priatelia a rodina dozvedia o väčšej hrozbe ich vesmíru, než je Upside Down.