Stan's Uncle Jimbo takes the boys on a hunting trip, unaware the town's dormant volcano is on the verge of erupting; Cartman tries to invent an urban legend.
The kids turn to Chef for genetics advice after deciding they want to mate a pot-bellied pig and an elephant in order to teach a smarmy classmate a lesson.
Stan's elderly grandfather tries to trick the boys into killing him; the parents of South Park band together to protest a profane cartoon, Terrance and Phillip.
The living dead beset South Park after a bottle of Worcestershire sauce mixes with embalming fluid at the mortuary; Tina Yothers judges a costume contest.
The boys unwittingly provide Barbara Streisand with the source of ultimate power, and it is up to Sidney Poitier, Leonard Maltin, and Robert Smith to stop her.
The citizens discover that Officer Barbrady cannot read, forcing him to go back to school with the boys, while someone starts having sex with chickens.
Leslie and Ben want to host a casual bowling party for her campaign; April, Chris, Donna, and Jerry have an inner-office contest to raise campaign money.
Leslie decides she needs to find Ann a new man just in time for Valentine's Day; Ben can't figure out Leslie's elaborate Valentine's Day scavenger hunt.
Leslie and Ben have an awkward run-in with Leslie's ex-boyfriend Dave at the police station while trying to get an endorsement from the Chief of Police.
When Leslie discovers that the department forgot about Jerry's birthday, she decides to throw him a birthday party; Tom is shocked by Ann's taste in music.
Ben and Leslie are taken by surprise when her opponent hires a new campaign manager from Washington; Chris decides it is time to hire a replacement for Leslie.
Ben and Leslie are excited when Buddy Wood wants to interview Leslie for his Indianapolis talk show; April and Ron help Andy prepare for his final exam.
Dwight is assigned a special project at Sabre headquarters and must decide what other Scranton employees to take with him; Pam returns from her maternity leave.
As soon as Dwight and his team from Dunder Mufflin arrive in Tallahassee, Dwight competes with his co-workers to get noticed by the special projects president.
Dwight and Packer compete to become Nellie's vice president, and Jim receives an unwelcome visitor in his room; Andy forces everyone to stay after hours.
While the teams in Tallahassee are readying the new Sabre Store for its opening, Dwight decides to prepare a very theatrical presentation to impress Nellie.
When Jim finds out that Robert hates Nellie's business plan, he tries to keep Robert from firing Dwight; Andy learns that Erin isn't returning to Scranton.
Andy plans a life-changing trip across the country to get Erin back; Nellie arrives in Scranton to lay claim to the manager position left open in Andy's wake.
Andy is surprised to find Nellie has claimed his spot as manager; Kelly is torn between someone who appears to be the perfect man and the far-from-perfect Ryan.
Andy accidently adopts 12 disabled dogs; Dwight learns the hard way that winning an auction means giving up money; Darryl teaches Nellie how to eat a taco.
When Dunder Mifflin hires two new and young employees, Jim and Dwight are thrown off balance because the new men are nicknamed "the new Jim" and "Dwight, Jr."
Two grown men who live with their single parents become step-brothers when their parents marry, and they are reluctantly forced to share a bedroom together.
The citizens discover that Officer Barbrady cannot read, forcing him to go back to school with the boys, while someone starts having sex with chickens.
Kyle's mother decides to raise awareness about the school nurse's morbid medical condition; the school dodgeball team heads to International Finals in China.
As citizens of South Park prepare for the Fourth of July, a law is declared making fireworks illegal throughout the town, causing the boys to hate summer.
