In the 21st century, information is the ultimate commodity. In a world where cyberspace is a workaday reality and outlaw hackers thrive, the most valuable information must sometimes be transported by mnemonic couriers--professionals like Johnny who offer the ultimate in security and confidentiality. Johnny contracts to deliver priceless data for a pair of scientists, defectors from Pharmkom, the world's third largest corporation. The massive upload is too much for the mnemonic implant embedded in Johnny's brain. With no idea of what he's carrying, Johnny must find the secret access-codes that allow him to download the information--or die. But data-overload isn't the only thing threatening his life. The Yakuza, the world's most powerful crime-syndicate, are working for Pharmakom. Takahashi, the Yakuza sector chief, distrusts his own men; he secretly hires the ruthless bounty hunter known as Street Preacher and orders him to bring in Johnny's head--cryogenically preserved.