Abigail manages a school for girls and falls in love with Thomasina Topaz. After Abigail refuses to marry a warlock named Fen Fogarty, he murders Thomasina and curses Abigail to live a long, lonely life forever as the comet passes.

The episode centers on the history of the Blossom women and the revelation that they are all, in fact, the same person cursed with immortality.

Cheryl reveals to her student Britta that she has been Abigail all along. She is waiting for the next passing of Bailey's Comet to finally break the curse. The Sabrina Crossover

Rivervale, a "shadow town" and parallel dimension where the supernatural is common.