Canterbury's Law is a courtroom drama about a rebellious defense attorney, Elizabeth Canterbury (Julianna Margulies) who bends the law in order to protect the innocent falsely accused of crimes. Elizabeth is a hot-shot attorney on the rise, and often takes on risky, unpopular cases in order to advance her career.

Elizabeth and her husband Matthew (Aidan Quinn) carry the burden of their young son's mysterious disappearance and moved to Providence, Rhode Island in order to get away from the tragedy as an attempt to start fresh and put their relationship back together. But that proves hard to do when the cases Elizabeth takes on provide a constant reminder of the justice they never received in their own lives.

At the firm, Elizabeth has a staff of brilliant attorneys. Russell Cross (Ben Shenkman) was forced out of the Providence DA's office after going up against his morality-deprived boss, Zach Williams. Now, reputation shattered, Russell is taken in by Canterbury and provides her with a voice of reason, even when she refuses to listen. Also part of the crew are Chester Fields (Keith Robinson) and Molly McConnell (Trieste Dunn), associates who have very different backgrounds, but are equally good at what they do.

Canterbury's Law shows the hard path, from professional and personal battles, to haunting memories, that some take to find their inner-string and victory in order to help those in need.