"Nick and Hank investigate a rare wesen that leaves victims frozen; Juliette seeks revenge."
So we have a weird snake sort of Wesen running around sucking the heat out of people in order to not freeze to death while on their way to a 'snake pit' of sorts where their people ball up and hibernate for the winter. We have Juliette trying to use her powers to kill Adalind then freaking out and running to Monroe and Rosalee for help, before revealing to them she is a Hexenbiest and running away saying they can't help her anyway. Meanwhile the new dorky royal continuing the search for Renard and Adalinds kid.