Christopher Chance is a unique private contractor/security expert/bodyguard hired when an unusual or imminent threat cannot be solved through normal means of protection. Chance works with his business partner and trusted friend, Winston, and hired gun, Guerrero, to integrate himself completely into his clients' lives and eliminate the threat by becoming the human target. In the series preview, Chance is hired to protect the engineer of California's first bullet train as it makes its maiden voyage from Los Angeles to San Francisco.