Barbara's formerly overweight sister (Wendie Malick) visits and tries to use her new looks to take advantage of Stan; Winston and Audra get back together. Vlad: Dmitri Boudrine. Dimitri: Roman Varshavsky. Audra: Kimberly McCullough.
Stan and Barbara call off their “friendly divorce” and hire lawyers to handle everything after he cancels her credit cards. Stan thought Barbara went on an unnecessary spending spree, but it was actually Winston and Karly who did the shopping with their mom's card. Gordon: Mark Tymchyshyn. Lila: Randee Heller. Audra: Kimberly McCullough.
Barbara and Stan try to outgive each other after she presents him with a valuable baseball card that was meant as an anniversary present; a handsome man Karly once met in Ireland pays an unexpected visit; Winston celebrates his 21st birthday. Seamus: Ryan Alosio. Audra: Kimberly McCullough.
Barbara and Stan announce to their grown children that they are getting a divorce after 25 years of marriage, but the kids immediately try to reconcile the two. Meanwhile, Winston asks out a pretty colleague from the lab, and Karly is evicted from her apartment. Audra: Kimberly McCullough.
Stan and Barbara compete for the attention of some friends who just learned about the divorce; Karly learns her mom accidentally killed her cat two years ago; Winston discovers Audra once dated his favorite professor.
Barbara and Stan try to prove to each other that they are ready for the dating scene again; Winston uses an Internet dating service to get over his breakup with Audra. Nadia: Gigi Rice. Rhonda: Esther Scott. Bar Guy: Paul Anthony Reynolds.
Stan hurts his back and Winston stays home to take care of him, while Barbara and Karly attend a “Sound of Music” sing-a-long dressed as characters from the movie. Winston: Jay Baruchel. Karly: Lindsay Sloane.