Just Add Halloween (S02E01)

After their Last-Ditch Layer Cake breaks all the town’s curses and brings an old enemy back, Kelly, Hannah and Darbie are on the hunt for a special ingredient to determine his whereabouts. The ingredient only blooms once a year... on Halloween, so the girls have to find a way to go back to last year’s Halloween and get it without running into their past selves. (Prime Video)