From the back of the book:
Playing it safe isn't working anymore; you're not going to get out of this clean. You have illicit tech and the talent to use it. Time to go shake the city and see what falls out. You'll get hurt, sure, but what kind of pain will you deal out?
Technoir is a roleplaying game. You play protagonists like cyber-tweaked couriers, hard-nosed investigators, and drugged-out hackers making opportunities for themselves in a despairing world. Using a rules-light system with enough intricacies to spark new fires of hardboiled crime novels and cyberpunk science fiction, Technoir lets you coax, hack, fight, prowl, and shoot your way through a dark future. It features Transmissions—city guides brimming with plot nodes to inspire your high-tech adventures—that the GM uses to create tangled and compelling plot webs that expand and evolve as the players' characters engage it.