When Benny wants to impress a girl at school, he does what any boy with a spellbook would do: he resurrects her dead dog, Puffles. But Benny uses a little too much potion, and Puffles isn't the only animal buried in that yard.

Erica and Sarah join the Whitechapel Devils cheerleading squad. Worried about what Erica may do, Ethan and Benny have to go "undercover" to stop her. But there may be more happening with the cheer squad than anyone thinks.

The gang is shocked to discover that a child's doll actually turns into an evil human-eating monster.

Ethan tries out for the football team after he is visited by the ghost of the former Whitechapel High football coach.

The guys try to prove that their friend is a werewolf.

Ethan, Benny, and Rory summon a Demon that takes over Sarah's body turning her into a crazy goth vampire that loves human blood.

Jesse is awakened from the dead and returns from the grave to get Sarah back but she refuses. Ethan and Benny prepare to destroy Jesse again. On the night of their high school dance, they arm themselves with weapons and try to fight off Jesse but Jesse bites Ethan.Then Jesse runs away. Sarah has a choice: save Ethan (which will in turn her into a full vampire) or let him become a fledgling. Sarah saves Ethan by sucking the venom out of his blood. Back at home, Benny's grandmother tells an injured and resting Ethan that he is still fully human. Ethan however feels terrible about what Sarah had to do--now she has no hope of ever becoming human again. Outside, Erica lets Sarah know that they are now best friends forever (literally) and that she will always be there for Sarah. Sarah seemingly accepts what she is and she, Erica and Rory fly away to their after-party.

As a new school year begins, Ethan and his pals haven't seen Sarah since her dramatic transformation into a full vampire months earlier. She finally reappears on the scene, ready to 'move ahead' with her life and her education, almost as if nothing had happened. Is it a coincidence that numerous vampires are being mysteriously attacked at the same time? The Council begins to suspect that either Ethan or Sarah is to blame, and they must clear their names if they want to survive. Meanwhile, a desperate former Dusk actor appears in town seeking publicity, and instead gets too much information about the Real Vampires of Whitechapel thanks to his number one fan, Erica.

When Mr. G unearths a mysterious crystal skull from his garden and brings it to school, he inadvertently summons an ancient Mayan Sky Queen who takes over his classroom. She entrances all the males in the school to help her prepare for a ritual that will unite her with the Sun King and end the world. At first jealous, Sarah and Erica soon realize it's up to them to save the school – and the planet – from the Queen's apocryphal plans. They ask themselves what Ethan and Benny would do and, with Grandma's help, make a plan to block the sun, channel the moon, and save the day.

During the annual cookie drive for Jane's youth troop, a creepy, otherworldly Troop Leader conspires to rid the town of all adults, and lure the kids to its Eternal Playground. With all the grownups gone, Ethan and the gang have to take charge and stop the beast before Jane is lost forever, and the vampires – especially Sarah and Erica – get hungry enough to start preying on the young...