Cartman decides to find out which student at the school is responsible for starting a lice outbreak; a louse tries to stop the deaths of all his friends.
The number of homeless people in town is on the rise, and while the boys' parents are generating ideas to help the homeless, the boys try to stop the influx.
The boys are impressed by Randy Marsh's latest achievement in the bathroom, all agreeing that it could be a world record, until someone else wants the title.
Leslie has difficulty accepting her last day in office and makes future plans with Ben; Chris and Ann learn the sex of their child; Andy returns to Pawnee.
Leslie and Ben prepare for their first days at their new jobs; Ben is the victim of a prank at the hands of Donna, April and Andy; Tom has a big presentation.
Leslie and Ben quarrel over the suspect sales techniques being used at the local farmers market; Ann looks for a way to vent the frustrations of pregnancy.
Leslie throws an extravagant going-away party for Ann and Chris on their last night in Pawnee, and she goes all out to try to fulfill a promise that she made.
In the 1980s, a down-on-his-luck wedding singer who is left at the altar on his wedding day falls in love with a waitress who is engaged to a wealthy jerk.
A single father and a single mother, who don't like each other, are forced to share a suite at a luxurious African safari resort for a week with their children.
Jerry and Elaine join George for a special party, where they send signals to each other to get out of bad party conversations; George has an office romance.
Everyone has an uncommon experience while going their separate ways on the subway; Kramer overhears a hot tip on a horse on his way to pay a traffic violation.
Jerry's Pez dispenser makes Elaine laugh during George's girlfriend's piano recital and puts their relationship in jeopardy; Kramer joins the Polar Bear club.
After selling each other on the idea, Jerry and Elaine sell George and Elaine's friend on a blind date and await the results; Kramer gives away condoms.
Jerry meets Keith Hernandez and wants to make a good impression, but after being introduced to Elaine, Keith breaks his date with Jerry to make one with her.
Elaine and Keith are hitting it off until he pulls out a cigarette; Keith wants Jerry to help him move, leading Jerry along with Elaine to breakup with Keith.
Tension spins out of control for Peter and Quagmire when Peter gets a big head from the fame of their new musical group in the vein of Simon and Garfunkel.
While Peter attempts to push the holiday spirit onto Lois's dad, who despises the day, Stewie is faced with what it means to confess during the Christmas-time.
The quaint town of Quahog gets a spin as the Griffins get sucked into the tales of "Jack and the Beanstalk," "Little Red Riding Hood" and "Cinderella."
After he takes up smoking cigarettes, Peter is promoted as the face of an anti-smoking campaign by an advertising executive who wants him to continue smoking.
When Canada decides to go on a long and painful strike, the boys must resolve the problem; Danish citizens migrate to the U.S. to replace the Canadians.
Mr. Garrison takes the class on a field trip to a living museum based around life in the 1800s; Cartman makes Butters go to the amusement park next door.
None of the boys believe Butters when he tells them he saw a vampire at school; students at school can't tell the difference between a Goth and a vampire.
