Sabrina Morningstar returns from the Cosmics to Sabrina Spellman's realm and dies in her arms as she warns her that The Void is coming. Sabrina then decides she has to destroy The Void once and for all, even if that means she'll also die doing so. She receives Pandora's box from the same purveyor of trinkets that owned the imp. Taking the box, she heads to the edge of The Void and tries to imprison it. Just as she's about to accomplish her mission, Hilda, Zelda, Ambrose, and Nick summon her soul into the corpse of Sabrina Morningstar.
It isn't until Lucifer comes to retrieve the body of his daughter that Sabrina realises that part of The Void is now inside of her. She then ends up sending Caliban, Harvey's dad, Roz, Prudence, and a handful of miners into The Void. To avoid sending anyone else away, she sends herself to the Mountains of Madness where Faustus Blackwood finds her and becomes her disciple.
Ambrose, Zelda, and Nick lead a plan to get Sabrina back by taking the remaining Eldritch Terrors to Blackwood. Upon their arrival, Sabrina has a plan of her own and tells them they must drain her of The Void to free everyone. Agatha, Zelda, and Hilda try to keep Sabrina alive as she is drained of blood, but their ritual fails and Hecate allows Sabrina to die. Everyone important in her life attends both her and Sabrina Morningstar's funeral and it is later revealed Sabrina is now in the Sweet Hereafter.