While helping with a library project, Willow accidentally releases a demon called Moloch the Corrupter from his book prison into the Internet. The next day, Willow is giddy over a boy she’s begun talking to online, while Buffy and Xander are skeptical that this boy is who he says he is. Moloch starts causing havoc in his new home on the Internet and recruits two of Buffy’s fellow students to kill her.
The Scoobies put together that Moloch is behind the chaos happening and is actually the one behind Willow’s new romance. Willow is later kidnapped and taken before Moloch. Willow refuses to pledge herself to him, and Buffy and Xander arrive just as Moloch gets violent. Meanwhile, Giles works with the computer teacher Ms. Calendar to bind Moloch into a robot body. Expelled from the Internet, Buffy tricks Moloch into electrocuting himself, killing him for good.