Erin convinces her older self to try to help her and the Girls find a way home to 1988…right as they are stalked by Prioress, one of the evil Old Watch soldiers determined to erase them from history.

Desperate to find a way home, Tiff leads the girls to her adult self, who accomplished so many of her childhood dreams but she isn’t everything that was expected. Together they work to decode Larry’s ledger as the Old Watch close in.

Tiff confronts her adult self about the choices she’s made and KJ tries to help Mac grapple with her future as Larry and Erin call for back-up.