Lee Cantrell, a young San Francisco attorney by day, at night becomes a samurai warrior, and battles a crazed multi-millionaire who is planning to destroy the city with an earthquake machine.

Jim Phelps is the new leader of the Impossible Missions Force, with no explanation, or even reference made, about the departure of predecessor Dan Briggs. First up for Phelps is a mission involving the drug trade. Cresnik and Walters have cornered the heroin market and sell it at a handsome profit to gangs around the world. Phelps devises an operation which will drive a wedge between the heroin dealers and their customers.