Beavis and Butt-Head visit the local zoo and cause a panic.
Frasier and Niles confront the bullies who used to torment them in junior high school.
A novelty-store owner refuses to exchange Michelle's gift for Danny on Christmas Eve.
On Christmas Eve, new air traffic controller Bob snaps when Antonio buys Helen's last jelly donut, pulling out a gun and taking Antonio hostage. Matters for Antonio only get worse when it is revealed that his new girlfriend is also Bob's wife. Joe is eventually able to talk Bob into surrending his gun, but the others are not very appreciative of the means by which he does it.
The owners of Abbots Farm are in trouble when an outbreak of tuberculosis hits. Alf has trouble with the car again, only this time he gets it stuck in a river! Nick helps him rescue the car and Claude jokes about some spooky noises in the area. The police uncover some illegal exotic birds.
Maggie gets elected mayor. Joel invites Phil up river, for a game of golf and a test. Michelle covers Maggie's first city council meeting as mayor and Maggie makes her first motion for a centrally located dumpster but runs into opposition from the fiscal-restraint minded crowd. Maggie's power as mayor becomes a turn on for Chris. Marilyn invests money in a stud dog that doesn't want to mate.
Bailey meets Jill Holbrook, a pretty waitress who he falls for and ends up sleeping with her. Morgan begins to drink after his club is closed down and he is forced to pay a fine. Julia wants to help, but he doesn't accept her apology or her money to pay the fine. Claudia receives her first period. Kirsten's family wants her to return home to Chicago.
Alison clashes with a man in her group meeting, NFL quarterback Terry Parsons. When Billy fails to show for a meeting featuring loved ones, Alison sneaks out to a bar and gets hammered. Terry helps her get sober and explains his earlier behavior. Billy is outraged when he learns that Susan failed to tell him about Alison's meeting. He lights into her, prompting Susan to move out. Peter displays increasingly controlling behavior toward Amanda. Jane sends a note and flowers from Michael back to the beach house, and Kimberly threatens to divorce him. The baby becomes very ill and is raced to the hospital. Michael refuses to return the child to Jo, even after a blood test proves she is the mother. Jeffrey is livid when Matt reveals his HIV positive status to the neighbors (to explain Jeffrey's panic over a bleeding cut). Jake breaks up with Sydney after learning that she slept with Chris.
Maxwell refuses to divulge the identity of the celebrity recuperating from surgery in the Sheffields' house.
When Juana brings gifts of musical instruments back from Puerto Rico, everybody decides that a dress-up Carnival is the only way to go. Imaginatins run wild as folks come up with outrageous disguises.
Just before a big bowl game, a rumor breaks out that Hayden may be taking a job in the pros.
Will works so hard to impress Lisa's dad that he spends all his free time with his new best buddy.
At Christmas, Mitch tries to reunite Joey with her mother; C.J. worries that a priest is leaving the church for her and Matt investigates whether Santa's elves are really vacationing at Baywatch.
With the Grendlers stealing reserves, the colonists must scan for bodies of much needed water. Danziger decides to head out in search of water and Devon insists on joining him.
Al's organization, NO MA'AM, leads a strike when Al's favorite show, Psycho Dad, is cancelled.
To get information on a gang who destroyed a friend's life via blackmail, Walker and Trivette join by posing as street fighters.
Ramirez takes Quentin to see the Sandman, a tormented Immortal once known as Prometheus, who possesses the forbidden knowledge of atom and nuclear weapons. Kortan tries to get to him first and kill him to absorb this knowledge.
A book fair in Miami becomes Jessica's backdrop when she teams with a Russian detective to solve an art theft and murder.
Tommy enjoys his mechanic's job at Vince's garage and he's good at it. Vince offers him regular employment. When school starts preventing Tommy from working at the garage as much as he'd like, he drops out so he can work full-time. It's a decision he comes to regret.