As Thanksgiving approaches, Bull releases his team to enjoy the holiday with their families, only to find himself working a case solo when he agrees to help a boxer who is being tried for murder. Also, Chunk makes a major personal decision at his family’s Thanksgiving dinner, while Marissa’s dinner with Kyle is abruptly cancelled when he is mugged

The DA hires Bull to help convict Hazel Diaz, an infamous drug dealer who murdered a police officer but has managed to avoid jail for years on an insanity defense by feigning schizophrenia.

Bull gets to work alongside his idol, Walter Franklin, a legendary lawyer who asks him to help a family bring suit against the U.S. government for the wrong death of a man killed while in witness protection. As the trial gets underway, Bull’s admiration for Walter is tested when the eminent litigator begins to deviate from Bull’s advice in court.

Bull and the TAC team question whether they have a solid defense when they represent wealth manager Rachel Elliot who’s on trial for her husband’s murder, which she claims to have no memory of due to an alcohol-induced blackout. When Rachel’s reputation for aggressive behavior threatens to hurt them in court, Bull avoids jurors with “rage bias,” an inherent dislike of people who can’t control their emotions.

Bull and Benny represent a couple being sued by their baby's biological father for custody after a fertility clinic mistakenly used the wrong man's sample. As family court cases are solely decided by a judge, Bull and Benny worry about their best strategy at trial without a jury for TAC to analyze.

TAC braces for an un-jolly Christmas when Bull and Benny represent Marissa and her estranged husband, Greg, in federal court after they're charged with money laundering and fraud connected to Greg's restaurant. As Bull and Benny defend the divorcing couple together so the prosecution can't use them against each other, they search for jurors who will believe Marissa had no knowledge of Greg's business dealings. Also, as Bull and Izzy prepare to baptize Astrid before the Christmas holiday, they reach an impasse regarding what they want from their renewed relationship.

Bull is hired to help a woman determined to go against legal advice when she insists on pleading guilty to the murder of a wealthy philanthropist who preyed on her a teenager.