Carl Sack is brought in from the New York branch to act as office "enforcer." Shirley is sued by Stanford University after she backs out of a donation. And a new lawyer, fresh out of law school, is assigned an unwinnable murder case.
Against all odds, new lawyer Katie Loyd and Jerry win their unwinnable murder trial. Alan is impressed by their victory. Shirley invites Lorraine to join the firm as a new associate. Denny lusts after the new associate and immediately invites her to sleep with him! Alan warns Denny to stay away from Lorraine and then has sex with her in the office!! Alan declines Judge Gloria Weldon's offer to have a child with her and they break up. Denny speculates with Alan about the nature of the relationship between Shirley and new boss Carl Sack.
A general sues the military because he was fired after coming out. The firm's latest hire takes a custody case involving child bullfighting. Alan's "word salad" returns over Lorraine, and Denny finds out about Shirley and Carl.
A woman who intentionally and maliciously avenged her daughter's death asks Alan to provide her with a temporary insanity defense. Meanwhile, Katie and Jerry try to get a questionable sexual offense conviction vacated for a client.
Whitney takes a case involving a police officer charged with murder after shooting an unarmed African American youth eight times, Clarence sues YouTube for defamation, and Alan defends Denny against the overweight lawyer he fired.
After Denny and Alan lose a lawsuit against the National Guard, they try to join the group and are rejected because of their age. Shirley defends her granddaughter after she is expelled for shredding a standardized test.
The firm is sued by one of its environmental group clients because it isn't "green" enough. Alan tries to help Clarence, who cannot make his house payments because of skyrocketing adjustable mortgage rates.
Much to the chagrin of his firm, Denny takes on a first-degree murder case without anyone's help, while Jerry and Katie agree to seek compensation for a woman whose husband fell under the guise of a shady lawyer who convinced him to divorce her.
A man whose sperm was used without his knowledge to impregnate a woman tries to get the court to force her to have an abortion, and Alan and Shirley are opposing counsel. Jerry defends Leigh after she is fired for hugging a student.
Denny and Alan unknowingly sleep with the same client, who is trying to block the building of a nuclear power plant. Opposing counsel is Shirley's old friend from law school, which makes Carl Sack very jealous.
Sack becomes increasingly frustrated with the firm's lawyers constantly taking on cases that don't make any money, and finds a potential new love interest to replace Shirley. Meanwhile, Denny and Alan prepare for their Coast Guard test.
Alan takes on an old hated nemesis in a case involving a shooting death after an ambush interview on a tabloid TV show. Shirley takes a case for an old friend, a troubled Vietnam veteran, who finds himself in dire straits.
Shirley pursues a court order to euthanize her father, who is in the advanced stages of Alzheimer's Disease. The residents of Nantucket petition for the right to have a nuclear weapon, and Jerry is sued by a sexy female companion.
Denny Crane falls for a rancher client who hires him to sue the FDA over cloned meat. Shirley and Alan sue the Democratic Party over pledged convention delegates switching their votes to the other candidate.
The town of Concord wishes to secede from the United States, and Alan and Denny act as opposing counsel in the case--a case that could cost them their friendship because their opposing views on patriotism and dissent.