In the third-season premiere, Celia acquires Nancy's stash and devises a shocking way to “liquidate” the assets; Andy teams up with Alaskan bounty hunter Abumchuk to track down Shane and Kat (Zooey Deschanel).
U-Turn sends Nancy to pick up a “package” from Mexican drug dealers; Celia hires a tough lawyer (Carrie Fisher) for her custody battle with Dean; Andy is called for military service with the reserves and is sent to boot camp.
Peter's DEA partner questions Nancy about his whereabouts; a builder (Matthew Modine) of “values-based” communities asks a zoning favor of the Agrestic city council; Shane helps Nancy with her résumé so that she can get a “real job.”
Nancy becomes embroiled in more of U-Turn's nefarious gangster work; AWOL Andy turns up in disguise; and Doug and Celia both work deals with Sullivan (Matthew Modine). Also, Shane finds religion at Majestic summer school and Silas displays a good deal of talent for the family business.
Silas hits it off with a fundamentalist Christian (Mary-Kate Olsen) who has a penchant for pot; U-Turn drags Nancy to a showdown with Conrad and Heylia; Sullivan asks Nancy to host a cocktail party to bring together the town leaders of Agrestic and Majestic.
Nancy works out a new deal after U-Turn's untimely death; Doug's campaign against Sullivan (Matthew Modine) picks up steam; Andy lands an interesting catering job; Shane has adjustment problems at school; Silas and Tara's relationship heats up.
Nancy meets Peter's ex-wife; Sullivan and Celia take a big step in their relationship; Andy offers more than his catering services to the porn productions; Tara joins Silas on the job; Shane's school suspension allows him time to bond with Isabelle.
Nancy continues to attempt to get to know Peter's ex-wife, who considers her an “insane stalker person”; Tara (Mary-Kate Olsen) asks Nancy to take her on as a dealer; and Dean is injured in a motorcycle accident. Also, Doug takes a messy revenge on Sullivan; and Conrad agrees to teach Silas the grow business.
Valerie sends a private investigator after Nancy; Celia digs deeper into Aguatecture; Doug and the rest of the Agrestic city council get their walking papers; Silas discovers Tara is spending time with other guys; Shane installs a state-of-the-art security system.
Nancy deals with a triple hit of trouble when Silas gets injured, Shane shows signs of mental instability and the biker gang turns threatening; Doug's war with Sullivan intensifies; Heylia tutors Celia on the family business.
In the third-season finale, Agrestic residents flee an approaching wildfire; and suspicious authorities grill Celia and Sullivan. Also, Conrad, Heylia and Vaneeta leave their grow house, and Silas comes to some startling realizations about Tara (Mary-Kate Olsen).