Shortly after Ethan Marshall attends the lake-side funeral ceremony for his wife of forty years, he climbs into the car inside his enclosed garage in the suburbs of St. Louis, starts the engine, and waits to die. The toxic fumes were only minutes away from suffocating him when chance circumstance fortuitously saved his life.

Until Sarah's death, Ethan had lived an idyllic life as a successful criminal defense attorney, a husband, and the father of two children. He had always believed, however, that Sarah was the keystone to his existence, and now that his grown children have fled the nest, he feels his best years are behind him, and he can no longer find a reason to get up in the morning.

Ethan's path to redemption begins during a visit with his son, Noah, who is wrestling with his own dilemma. While camping with Noah along the Oregon coast, Ethan receives a call from Daryl, a person from his distant past who still haunts his conscience and is now homeless and in dire need of an experienced defense lawyer.

After returning to St. Louis, Ethan assembles a team that includes Noah, Tom, an old law school friend aimlessly living in a small Kansas town, and Owen, a former teacher who may have a vital contribution to offer. Together, this team will not only conduct a valiant effort in a trial to defend Daryl against outrageous charges but will each find a reason to rage against the dying of the light.