Burt ends it with Sally, who takes the news very badly. Dutch and Eunice get a visit from Jessica, Benson, and Billy--and the cops. Danny sets out to find Elaine's killers with Burt in tow. Detective Donohue presents Jessica with evidence of Chester's death. But Chester is very much alive, if a little confused, in Toledo.
Burt, Danny, Jodie, Chuck, and Bob drown their sorrows during a night on the town. Tim announces he's moving to a cave in hopes of making peace with God. The police catch up with Dutch. Jodie meets Alice, a suicidal lesbian, on the Tri-borough Bridge. Mary moves in with Jessica. Corinne goes into labor.
Corinne gives birth to a beautiful, healthy baby boy. Mary angrily confronts Burt with his alleged infidelities. Jodie and Alice get off to a rocky start as roommates. Jessica enjoys an evening of dinner and romance at Detective Donohue's apartment. Meanwhile, Chester regains his memory and heads for Dunn's River.
Jessica chooses Chester, but offers to let Donohue stay in the Tate house until he recovers from the shock. Burt wakes up on the spaceship, where the aliens reveal that they plan to replace him with a replica. The alien double moves in with the unsuspecting Mary. Carol's mother introduces Jodie to his newborn daughter, Wendy. Benson, Chester, Donohue and the Major prepare to rescue Billy from the cult. And Danny goes missing.
Alien Burt has his way with Mary, and she's not complaining. Real Burt meets Saul, who tells Burt he cannot escape the spaceship. Billy resists the Sunnies' brainwashing. Mrs. David asks Jodie to choose between Wendy and Alice. Benson and "the Step Brothers" penetrate the Sunnies' compound but are stopped short of rescuing Billy.
Burt and Saul escape the spaceship but find themselves in other danger. Jessica finally convinces Detective Donohue to leave. Millie comes to Danny's rescue. Eunice awaits Dutch's release from prison while Corinne bemoans her non-existent sex life with Tim. Chester resumes his philandering ways. Billy and his teacher share a kiss.
Real Burt calls Mary, but Alien Burt intercepts Mary on her way to meet him. Jessica confronts Chester with her suspicions that he is cheating again. Eunice tells Corinne that she's fallen out of love with Dutch. Corinne spots Chester with another woman in a restaurant. Billy and Leslie sneak away to a romantic restaurant, only to run into several familiar faces. Tim and Corinne decide to divorce.
The Tates and Campbells gather to welcome Dutch to the family--and scare Millie away in the process. Billy and Leslie's romantic evening is interrupted by her ex. Jodie and Corinne discuss single parenthood. Alien Burt refuses to return to the spaceship. Real Burt finally contacts Mary, then disappears before her eyes. Back on the spaceship, Real Burt convinces the aliens to give him a chance to persuade Alien Burt to leave Earth for good.
Burt can't bring himself to tell Mary he won't live to see their baby born. Danny and Polly declare their love for one another. Mary worries about Danny's interracial relationship, but Jodie convinces Danny to follow his heart. Billy loses his virginity to Leslie. Mary wonders whether Real Burt or Alien Burt fathered her baby.
Danny learns of Burt's illness and agrees to help Burt win a spot in the Guiness Book of World Records. Eunice asks Corinne to cover for her while she cheats on Dutch. Chester's attempts to resist the minister's sexy daughter prove futile. The Campbells host Polly's family at dinner. After Chester tells Jessica he has lapsed again, she kicks him out of the house.
Burt rushes home with news that he isn't dying and vows to live the rest of his life to the fullest. The minister's daughter leaves Chester. Danny and Polly buy a house. Jessica catches Dutch and Corinne in bed together. Jessica's psychiatrist asks her out. Carol tells Jodie she wants custody of Wendy.
Danny and Polly have Burt and Mary to their new house for an eventful evening. Billy dumps Leslie, who threatens suicide. The Campbells brace for the custody trial. The Tates welcome a new butler, Saunders, who immediately regrets taking the job. As the families gather to watch election coverage, Jessica collapses.
Jessica asks Chester to move back home while she's in the hospital. Dr. Hill tells Chester that Jessica is very sick. Burt's first assignment as sheriff is to remove his predecessor from office. Corinne convinces Dutch not to move out. At the custody hearing, Carol tells an outrageous lie about Jodie threatening to kill her.
Season #3 season finale was an expanded episode of 60 minutes. Now shown in two parts in syndication. Danny proposes marriage to Polly; Sheriff Burt and Deputy Danny are set up for blackmail by mobster Elmore Tibbs; Dutch cannot choose between two sisters; Carol's mother joins her daughter in perjuring herself in court; Leslie now decides to kill Billy; and Jessica's death watch features a surprise visit from Benson.
Dr. Hill revives Jessica, who remains in a coma. Danny and Burt wake up in an adult motel. Mary is relieved to see that her baby is white. Billy dodges Leslie's bullet, which hits Saunders instead. Dutch chooses Eunice over Corinne, who announces she will be moving on soon. Jessica emerges from her coma apparently healthy and surrounded by her many suitors. After the judge learns of Carol's machinations, she awards custody of Wendy to Jodie. Carol threatens Jodie. Burt and Danny receive X-rated pictures of themselves in the motel room.
After Burt tells Jodie there's nothing the law can do to help find Wendy, Jodie takes matters into his own hands. Jessica returns home from the hospital. Eunice and Dutch announce their engagement, much to Chester's horror. Leslie continues her bumbling efforts to kill Billy. Mary receives the blackmail photos of Burt in the motel room. Jessica agrees to allow Chester to live in the poolhouse.
Jessica consoles a depressed El Puerco and convinces him to fight the revolution from her house in Connecticut. Gwen testifies against Tibbs. Someone is spying on Gwen and Danny. The Tates hold a garage sale to raise cash. Burt and Mary make an appointment for sex. Jodie and Maggie's search for Carol and Wendy leads them to a rowdy saloon.
Annie realizes Chester is still in love with Jessica but agrees to marry him anyway. Jessica tries in vain to seduce El Puerco. Burt vows to find Tibbs and make him pay for shooting Danny. The Campbells learn that Danny will need a kidney transplant, which forces Mary to reveal a devastating secret.
Chester becomes the vital kidney donor on Danny's behalf; Dutch and Eunice try to spice up their sex life by play acting; believing her sister has betrayed her, Jessica refuses to speak to a despondent Mary, who reveals how their mother arranged scatterbrained Jessica's marriage to embezzler Chester.
Jodie, Maggie and Wendy are rescued from the fortress. Jessica and Mary come to an understanding. Mary tells Jessica that she has a drinking problem, the baby may be an alien, and she fears she is losing Burt. Jodie decides to see a therapist so he can be sure about his relationship with Maggie. Danny blames Burt when Gwen runs away. Jodie signs up for hypnotherapy.
El Puerco learns a few things about women after spending the night with Jessica, Eunice is driving Dutch a bit crazy with her fantasy games in bed, Chester and Annie announce that they are married, but Chester continues to act possessively toward Jessica, Mary walks out on Burt when he accuses her of being drunk, Dutch fails to turn Eunice on with his Cyrano de Bergerac costume, Jodie comes out of hypnosis believing that he's a 90-year-old Jewish man named Julius Kassendorf
Burt receives a tip about a major drug transaction. Danny tells Burt that he's in love with Annie. The Tates worry about Jessica. Jessica makes life difficult for her captors. The communists demand El Puerco's surrender. Jessica prepares to face her execution. Chester catches Danny in bed with Annie. Burt walks into an ambush. Jessica faces a firing squad.