Buffy and Riley's passionate lovemaking energizes supernatural elements inside a frat house.

Buffy senses that something is amiss when Jonathan becomes a hero to everyone in Sunnydale.

Xander finds employment as a bartender at a pub where some of Buffy's friends turn into terrifying Cro-Magnon creatures.

Tension erupts between Buffy and an ailing Riley as they pursue Professor Maggie Walsh's killer.

Buffy and her friends are given eggs to take care of for a health class assignment, but aren't prepared for what hatches.

When Buffy gets a job at the Doublemeat Palace, a local fast-food restaurant, she begins to believe that disappearing co-workers and the secret ingredient to the restaurant's hamburger may be connected.

Buffy's old boyfriend, Riley Finn, shows up unexpectedly as he tracks a demon about to hatch eggs that could wipe out Sunnydale.

Willow's new Internet chat buddy turns out to be a powerful demon electronically unleashed from a centuries-old, newly digitized book.

Buffy and Cordelia inadvertently attend a frat party hosted by a murderous cult.

Two science club nerds use body parts to create the "perfect girlfriend" for a teenager who has been brought back from the dead.

Members of the Sunnydale swim team are killed by a gill monster of unknown origins.

Kennedy, a potential Slayer, takes Willow on a date, which is interrupted when Willow finds herself transformed into Warren. The other Potentials go on a retreat with Giles, who the gang realize may have been replaced by the First. Spike's chip is having agonizing malfunctions, and he and Buffy return to the Initiative to search for a fix.

Buffy teams with Riley after she is allowed access to the Initiative; Spike is targeted by commandos.

After their horrifying loss at the vineyard, the gang turn against Buffy and begin to follow Faith instead. Meanwhile, Spike and Andrew travel to an old church to question a priest about Caleb.

When teen vampire slayer Buffy tries to start a new life at Sunnydale High, she discovers that the school sits atop a demonic dimensional portal.

After discovering the corpses of two young children bearing a symbol linked to the occult, Joyce spearheads a campaign to rid Sunnydale of witches.

While Riley's health begins to deteriorate, Spike and Harmony force a surgeon to remove the behavior modification chip embedded in Spike's brain.

On Halloween, Dawn and her friend go out to make mischief and impress their crushes, but stumble into real danger. Xander announces his engagement to Anya, and Tara worries about Willow's reliance on magic.

Buffy's biology teacher is killed by a giant praying mantis that assumes the form of a beautiful substitute teacher.

With Buffy preoccupied by her date with Owen, Giles is trapped by a group of vampires seeking to raise a powerful leader.

When an invisible menace starts attacking students and faculty at Sunnydale High, the Scooby Gang traces the problem back to Cordelia.

While hospitalized with a severe case of the flu, Buffy investigates the young patients' fear that Death is stalking the children's ward.

A Nigerian mask reanimates the dead, forcing Buffy to battle a horde of zombies.

Glory transforms a snake into a terrifying monster in her quest to find the Key; Joyce is hospitalized after being diagnosed with an illness.

As Joyce's sickness makes her begin doing odd things, a demon emerges from a meteorite and begins killing the mentally ill.