When Burt and Barney travel to Maw Maw's childhood home, they learn that her mother may still be alive.

After learning that he is Jewish, Burt prepares for the bar mitzvah he never had.

Sabrina is excited to introduce her new friend, Rachel, to the family, but Virginia and Burt are shocked when they realize Rachel is the girl who once broke Jimmy's heart.

It's a "My Name is Earl" reunion as the Chances throw a birthday party for Hope. Jason Lee reprises his guest-star role as former rock star Smokey Floyd, and he is joined by guest stars Jaime Pressly, Ethan Suplee, Nadine Velazquez and Eddie Steeples as Natesville locals who all band together to save the party.

After Sabrina objects to the way the Chance family celebrates Arbor Day, she is visited by the ghosts of Arbor Day Past, Present and Future.

When Burt (Garret Dillahunt) and Virginia (Martha Plimpton) discover that their storage locker is up for auction, they also realize they have misplaced a personal and incriminating home video that has fallen into the hands of another couple (guest stars Mike O?Malley and Liza Snyder). Meanwhile, Sabrina tries to get to the bottom of Jimmy?s epic sleepwalking habit.

When Hope and Jimmy start working on "Yo Zappa Do," the show's star makes Jimmy's life miserable.

The whole family goes on a road trip to Los Angeles for a taping of Hope's favorite show, "Yo Zappa Do"; Virginia and Burt let Ricardo stay at their place, but their house guest quickly wears out his welcome.

Sabrina's mom hires the camera crew from "Modern Family" to film Jimmy and Sabrina's nuptials; when Maw Maw and Reverend Bob butt heads, Burt and Virginia work to save the ceremony without Jimmy and Sabrina being the wiser.

Jimmy is apprehensive when Frank wants to throw a memorable bachelor party; Sabrina encourages Jimmy to cut loose and have fun.

Jimmy participates in medical experiments to raise money for an engagement ring; when Jimmy finds the perfect ring at a pawn shop, it ends up being Virginia's.

When Jimmy and Sabrina decide to buy a new car, they learn Burt and Virginia ruined Jimmy's credit when he was a child.

Convinced that the world will end on Dec. 21, 2012, Virginia stocks up on supplies and makes her family train for the apocalypse; Jimmy tries to make Hope's Christmas special.

When Jimmy leaves Hope with Sabrina for the day, Sabrina tries to prove her parenting skills. Virginia and Burt try to catch a squirrel bully.

The family participates in a 1K walk; Virginia and Burt feel the effects of aging; Jimmy has a difficult time supporting Sabrina when she gets into a fight with her ex-boyfriend.

Jimmy tries to win a candy-selling contest so Hope can ride on a float in the Thanksgiving Day parade.

When Jimmy learns his parents briefly gave him up for adoption, he asks Sabrina to help him befriend the man who would have been his brother; Burt and Virginia wonder if Jimmy would have been better off with other parents.

Virginia becomes suspicious when Burt starts spending a lot of time at a local gay bar.

When Jimmy and Sabrina go on a marriage retreat, Virginia and Burt and Tamara and her lover tag along. Barney baby-sits Maw Maw.

The Chance family devises a plan to break Maw Maw out of the nursing facility. Jimmy worries about his future sanity.

A visiting social worker sees how the Chances take care of Maw Maw and suspects elder abuse. Sabrina asks Jimmy to get rid of a beloved t-shirt.

At the funeral for Sabrina's grandmother, Nana, the Chance family meets Tamara (Melanie Griffith), Sabrina's mother. Nana's last will and testament has a significant impact on Sabrina and Jimmy's relationship.