Lori, along with Denny and Shirley, defends a school superintendent who fired two science teachers because they refused to teach creationism and is now being sued by them. Alan learns his assistant has expressed concern about their work relationship. While dealing with that issue, Alan discovers that his client Bernard Ferrion, who killed his mother, needs legal help again. One of the members of the firm is fired and learns that a close associate is not too keen on lending a supportive hand.

Brad becomes attracted to his client who being sued for having a relationship with her boss merely for financial purposes. To make matters more difficult, Brad convinces himself that she is lying about her being a lesbian. Alan is asked to second chair on Denny's trial case where a doctor is being sued for prescribing a drug that has not been FDA approved. While working on that, Denny is on a personal mission to prove that he is a competent attorney. Meanwhile, the staff tries to deal with Alan's out-spoken new assistant, Catherine Piper.

While out with Tara, Alan ends up causing a bar room brawl and as a result, becomes arrested for conspiracy to commit assault and battery. Shirley and Denny represent a man whose steakhouse is being put out of business because the public wants to ban red meat for fear of Mad Cow disease.

Shirley asks Alan Shore to use his odious lawyering to help her defend a police officer accused of torture. Donny Crane returns and is the opposing counsel in Denny's case, with Chelina Hall as second chair, where a woman wants to sue her former boyfriend for saying no to her at the alter. For Denny, this is an easy case, for Donny this is to settle a score with Denny for letting him believe for 25 years that he was his father. Meanwhile, Bernard Ferrion is befriended by Catherine and Alan finds variance with that.

Milton Bombay is asking the courts to allow him to be frozen until another century so he can continue his legacy of being a great lawyer and needs Denny and Shirley to defend him. Alan and Chelina defends a high school student who accuses his teacher of censorship when he blocks out a news station on the school's televisions.

Alan Shore and Brad Chase represent Kelly Nolan who is on trial for poisoning her husband. Meanwhile, Tara Wilson second-chairs for Shirley Schmidt and is shocked to find that the opposing counsel is her former lover, Malcolm Holmes. Garrett Wells and Sara Holt assist Denise Bauer on a case where a Jewish man felt violated when his Christian co-workers held Bible readings in the workplace. To make things worse, Denise is served with divorce papers.

The Kelly Nolan trial continues, but Alan, Denny and Brad run fear the worst when Kelly's cold demeanor begins to turn off the jury. Meanwhile, Garrett and Sara are enlisted to help Denise in her divorce settlement and Malcolm convinces Tara to represent Johnny Damon, Edwin Starr's nephew, whose performance of War strikes a nerve at a nightclub.

Denny takes Alan to Nimmo Bay, British Columbia, Canada, to help him get over his breakup with Tara. Catherine confesses to Bernard's murder. Sara and Garrett take extreme measures to help Denise challenge her husband's alimony demands in their divorce proceedings.

Denny's strong conservative values are put to the test when the firm represents a Democratic congressman who refused to keep a promise to his supporters. Alan tries to forget about Tara as he prepares to defend Catherine who is on trial for murder. Meanwhile, Sara is given a bizarre ultimatum.

Denise finds herself in a difficult position when an auto-injury case she neglected for three years comes up for trial and she is unprepared. While Garrett researches, he meets Cassie, a young paralegal whose strange sexual tendencies hide a painful past. Meanwhile Denny learns he must apologize to Lori or face a sexual harrassment suit, and Alan takes Sara out for dinner and a "show."

Alan and Denise take on the case of a young girl whose father killed her mother after finding the mother's whereabouts through her HMO's website.

Catherine Piper comes back into Alan's life - by robbing convenience stores.

Beverly Bridge, Denny's fiancée, flexes her muscle around the firm -- meanwhile, Brad attempts to manage the situation for Shirley and Paul.

Daniel goes in for chemotherapy, and attempts to shut out Denise.

After meeting Irma for a date, Alan finds himself defending her when she is charged with a sex crime by protesting topless.

Meanwhile, Denise finds it difficult to remain close to Daniel when he invites her to his own funeral, and Garrett faces his toughest challenge yet when Catherine invades his office.

Shirley defends a long-time client who doesn't want his Victorian erotica collection lost in his divorce, but she is shocked when Ivan is opposing council.

Alan takes drastic steps to help Catherine's friend who is being taken advantage of in a nursing home.

Meanwhile, Paul cuts back on his time at the firm when Fiona begins to take priority, causing worry among the other partners.

Denny is attracted to feisty lawyer Bethany Horowitz as they try a case against an HMO, and Alan grows more attracted to Shirley as they defend a homeless man accused of cannibalism. Meanwhile, Coho continues his defense of accused murderer Scott Little.

Shirley defends the notorious Catherine Piper after she accidentally blows up her doctor. Meanwhile, Alan and Denny take a break from the office, but they are out of their element at a dude ranch in Utah.

When Denny receives bad news about the state of his Alzheimer's, Alan goes before the Massachusetts Supreme Court to plead for access to an experimental drug that could help his condition. Meanwhile, Jerry and Katie try to help a girl get into Harvard after her SAT scores arouse suspicion, and Catherine Piper returns.