Danny proposes to Polly at a restaurant. Jessica sends home a tape recording to say goodbye to her family. Billy convinces Leslie not to kill herself, which causes her to hold him at gunpoint. The owner of an illegal massage parlor has his henchmen knock Burt and Danny unconscious after they refuse his demands. Chester, Mallu, Dr. Posner, and Dr. Hill argue over who will hold Jessica's hand when she dies. Mary goes into labor while visiting Jessica. Jessica flat lines during a visit by Benson.moreless
Jessica forgives Chester for all of his affairs. Carol's mother tells an outrageous lie in court. Mary tries to tell Burt their baby might be an alien. Eunice and Corinne fight over Dutch. The prosecutor attempts to humiliate Jodie in court.
Burt successfully removes the outgoing sheriff from his post. Mary becomes consumed with fear that her baby will be an alien. Chester moves back home. Leslie attempts to blow up herself and the Tates. Eunice returns home to find Corrine and Dutch in bed together. The doctor gives Jessica a grim prognosis.moreless
At the hospital, the family anxiously awaits Jessica's diagnosis. Burt becomes Sheriff but must remove the outgoing sheriff by force. Corinne convinces Dutch to stay. Jodie finds the odds stacked against him in the custody trial.
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.moreless
Burt announces he will run for Sheriff, and Danny wants to be Deputy. Jodie enlists Mr. Mallu's help in his fight for Wendy. Chester begs Jessica to take him back. Jessica entertains her psychologist, Dr. Posner, amidst the usual Tate insanity.
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.moreless
Carol pays a late-night visit to Jodie and Wendy. Jessica sees a psychiatrist who is crazier than she is. Burt learns he was the victim of computer error. Billy admits he is growing bored in his relationship with Leslie. The Tates rally to support Dutch after Eunice leaves him for another man.
Corinne comforts Dutch after Eunice runs away.
Mary confronts Burt about his odd behavior. Dutch turns to Corinne for advice about Eunice. Jessica seeks out Donohue, only to learn that he's married. Jessica tells Mary and Polly's mother about her chaotic love life. Dutch blows up at Eunice.
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. Jessica throws Chester out after he confesses to cheating on her again.moreless
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. Billy loses his virginity to Leslie. Danny is torn by his feelings for Polly and his fears about the racial issue. Mary wonders whether Real Burt or Alien Burt fathered her baby.moreless
Jodie and Wendy move in with the Campbells. Chester and Jessica see a marriage counselor. Danny finds Polly. Polly's brother Eddie disapproves of Danny.Burt gets mixed news from the doctor.
Jessica agrees to see a marriage counselor with Chester. The Campbells urge Jodie to move back home. Burt is jealous of Alien Burt's sexual prowess. At Billy's 18th-birthday party, Leslie promises "to blow out every candle on [Billy's] cake."
Jessica catches Chester with another woman. Burt and Mary go for their annual physicals. Danny tries to find Polly. Jessica meets Leslie. An agent from Child Protective Services pays a visit to Jodie.
Billy tells Jessica about his affair with Leslie. Burt returns home to share his ordeal with Mary. Danny meets a black widow at the cemetery. Dutch makes it clear he knows Eunice is cheating on him. Jessica spots Chester with another woman.
Mary begins to question her sanity. Eunice and Corinne call Chester on his cheating. Real Burt turns to Jodie for help. Billy plans a rendezvous with Leslie at a hotel but runs into Eunice, then Corinne, then Dutch, then Chester in the lobby. Real Burt makes an impassioned plea to Alien Burt.moreless
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.moreless
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.moreless
Dutch gets out of jail and moves in with the Tates. Danny brings Millie home to meet the Campbells. Mrs. David leaves Wendy in Jodie's care. Saul decides to stay with the aliens, but sends Burt home. Real Burt and Alien Burt have a traumatic first encounter. Billy and Leslie decide to pursue a relationship.moreless
Burt and Saul beam themselves into and out of nasty situations. 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.
Billy rescues the rescue team. The Tates celebrate Billy's return home. Mary is oversexed. Saul offers to help Burt escape from the aliens. Jodie is torn between Alice and Wendy. Jessica is sad to bid Benson farewell.
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.moreless
Jessica chooses Chester, but offers to let Donohue stay in the Tate house until he recovers from the shock. The aliens tell Burt that they plan to replace him with a replica. Carol's mother introduces Jodie to his newborn daughter, Wendy. Benson, Chester, Donohue and the Major prepare to rescue Billy from the cult. Burt's alien double moves in with the unsuspecting Mary.moreless