Toby appears to be an ordinary dog living the simple put life, but unbeknownst to his family, he moonlights as secret government operative, Agent Toby Barks.
Spenser, a former Boston patrolman who just got out from prison, teams up with Hawk, an aspiring fighter, to unravel the truth behind the death of two police officers.
A police raid in Detroit in 1967 results in one of the largest citizens' uprisings in the history of the United States.