Bull is brought on to help the FBI's case against a hacker whom they believe breached air traffic control at LaGuardia Airport. But when Cable learns that the accused is her friend's husband, she risks breaking the law – and defying Bull – to try and prove his innocence.

Bull seizes upon the opportunity to get a new trial for an old client when doubt is cast upon evidence that helped convict him of murder 14 years earlier. Also, Danny is reluctant to work with Cable's replacement.