On her sixteenth birthday, Sabrina Spellman discovers she has magical powers. She lives with her 600-year-old aunts Hilda and Zelda as well as talking cat Salem in the fictional town of Westbridge, Massachusetts.
As Sabrina continues to avoid choosing between Harvey and Dashiell, the pair give her an ultimatum: choose one of them, or neither will stay with her. Meanwhile, her aunts inform that she is finally to receive her witch's license.
Sabrina gets jealous when Mr. Kraft's assignment calls for the students to pair up and pretend to be married and Libby makes sure that Harvey is her partner.
Trouble brews between best friends when Valerie becomes eager to try out for cheerleading, even though Sabrina can't stand the squad's pom-pompous participants.
A thoroughly ridiculous Halloween episode finds Aunts Hilda and Zelda having run out excuses (after 500 consecutive years) not to attend their Aunt Beulah's Halloween party.
Hilda and Zelda's zany cousin convinces the sisters to switch personalities, and gives Sabrina a cologne to use on Harvey in order to make him more ambitious.
Sabrina's aunts send in their magic for its annual overhaul, but when it is sent back, it ends up in the hands of three pirate prisoners they forgot to release years before, and Sabrina, also without magic due to a mishap, must save them.
Roland the Troll resurfaces in a new guise as a leprechaun, and chaos predictably follows. Having three wishes, Sabrina unwisely uses one of them to grant Salem's desire to be human again for a day.
Sabrina's creative writing assignments aren't going well until she accidentally uses Hilda's magic typewriter to plot out a James Bond parody using her friends and foes as character models.
Harvey tells Sabrina he loves her, but under a self-imposed "silence" spell, she can't respond in kind and Aunt Zelda anxiously awaits a marriage proposal from Mr. Kraft.
Sabrina and her aunts travel to Hawaii for a family reunion, but when they arrive, Sabrina discovers that she will not be able to enjoy herself until she solves the family secret once and for all.
