Hacker Bobby is given a piece of software, which he believes to be an "ICE breaker". When he uses it to hack an ICE database he's almost killed, where it not for an image of a girl, Angela Mitchell, who is able to enter cyberspace without a computer.
He'd used decks in school, toys that shuttled you
through the infinite reaches of that space that wasn't space,
mankind's unthinkably complex consensual hallucination, the
matrix, cyberspace, where the great corporate hotcores burned
like neon novas, data so dense you suffered sensory overload
if you tried to apprehend more than the merest outline. p 38-39