Level-headed son Michael Bluth takes over family affairs after his father is imprisoned. But the rest of his spoiled, dysfunctional family are making his job unbearable.
Michael cannot go through with his plan to break up Gob and Marta. A thug magician wants to take Gob’s “legs”. Maeby wears all leather to get back at her mother, and Lucille decides to confront Buster’s relationship with Lucille 2.
Just as Michael’s relationship with Sally starts to flourish, Maggie Lizer returns nine months pregnant, and Michael immediately assumes he’s the father. George Michael attempts to break up with Ann, and Buster learns he’s being deployed to Iraq.
Gob and Buster team up for some magic tricks with the help of Buster's fake hand, but when Tony Wonder, a rival magician, starts to mentor them, somebody gets the finger. Meanwhile, Michael is forced to delegate some work when he's hospitalized and Lindsay teaches George Michael how to drive using the staircar.
Lucille finds that her children have started dividing up her things, and adjusts to her new home.
Surprises greet Michael at the penthouse and Sudden Valley. George-Michael confides in Maeby, who's trying to avoid Sudden Valley.
Michael loses his short-term memory, which Lucille uses to her advantage. Gob attempts to use the family yacht before Michael sells it. George Michael and Maeby attempt to see an R-rated movie about cousins having an affair. Buster and Lucille 2 take “the next step”.
With the company in dire financial straits and the Bluths no longer the primary shareholders, Michael must turn to old family friend “Uncle” Jack Dorso for financial assistance. Uncle Jack, however, wants something in return.
Lindsay tries to reclaim her sense of self while traveling and getting back to her political activist roots.
Tobias returns to his roots and reunites with his leading lady after a rough few weeks.
George-Michael tries to reconnect with his father, but is finding himself overwhelmed by the responsibility of running his business.