Sabrina has long felt the pull her two worlds, witch and mortal, but she's always had her devoted aunts Hilda and Zelda on her side to help guide her through that gauntlet. But when a spell suggests she can no long trust even them, where will Sabrina turn as a series of supernatural murders fall upon the town of Greendale?

Sabrina sets off on her own to unravel both the secrets behind Radka and Ren's transformations and the mystery of an apparent supernatural serial killer plaguing Greendale, she finds her two mysteries may in fact be connected... and she doesn't like the answers. Feeling like she has nowhere to turn, Sabrina finds herself confiding in Ren and further complicating her already messy love triangle of a life.