Scientist Ozma Furbanna asks for help to stop the poaching of native animals on the planet Karn. Mistaking him for a rare species, the poachers kidnap Booster.

While fighting NOS-4-A2 with Buzz, Space Ranger Ty Parsec gets bitten by an energy vampire and he turns into the Wirewolf.

Cosmo gets K-3000 Uni-appliance for Cosmo's Diner (the diner that Team Lightyear seems to spend too much time at); the K-3000 Uni-appliance is an experimental device that absorbs one's kitchen appliances into itself, and is able to use them all due to its powerful, experimental energy source and its ""liquid steel"" structure (...possibly constructed of nanobots?...very much like a robotic shoggoth, from H.P.Lovecraft's stories...). NOS-4-A2 senses the power within the K-3000 when the Courier delivering it passes close to the abandoned ship that he was residing in, trails after it, and takes control of the K-3000, all of Cosmo's restaurant equipment, and then all of Cosmo's Diner. Team Lightyear is in the process of returning Professor Triffid to his home planet, Rhizome, after a failed attempt on his part to convince Star Command to incorporate ""organic vegegenetic technology"" into their systems, when they receive the distress call from Cosmo.

After investigating a rash of robo-homocides, Team Lightyear discover that NOS-4-A2's loose on TradeWorld with a self-appointed ""slayer"" on his floating tail -- Savy SL-2, a human orphan that was adopted by a robot couple. NOS-4-A2 had ""vamped"" her adoptive parents, so she decided to step in as a vigilante vampire-robot-slayer (...a la Buffy...). With her assistance, they hunt down NOS-4-A2, fight his horde of enslaved robots, and defeat him, freeing those robots that were in the grip of his dark forces (...including XR who, as usual, was an easy mark for NOS-4-A2...).

Zurg tries to take over the planet Roswell, in order to set up a partner planet to Planet Z. Becky contacts Booster, and Team Lightyear shows up to defeat Zurg and save the day. The climactic battle between Zurg and Buzz takes place in the reactor chamber that is powering his self-constructing re-formation of Roswell; when they begin fencing with glowing reactor rods, and when Zurg attempts to throw Buzz off guard by claiming to be his father, the Star Wars references fly fast and furious. The self-constructing machine is thrown into reverse, Roswell is saved, and Zurg is defeated.