Although Nick tells Sabrina that they are endgame during "Chapter Thirty-Three: Deus Ex Machina," it isn't until the final episode that they truly start over as a couple. He will do anything to protect her, including using an Eldritch Terror as a breathing mask so that he can rescue her body from The Void. As a gift on her 17th birthday, he gives her half of a locket so that they can always be connected. While Ambrose and Harvey are tasked with rescuing those trapped in The Void, Nick is the one that has to trap it in Pandora's Box to finish what he started. It doesn't take long for him to realise that Sabrina doesn't make it out alive in the ritual and rather than move on with his life, he goes swimming in the Sea of Sorrows. It is assumed he drowns as he ends up in the Sweet Hereafter with Sabrina due to "a wicked undertow."