Thriller about a young computer specialist, Thomas (Edward Furlong), who spends most of his time on the net. He logs on regularly to Cathy's (Valerie Decobert) site and they become good friends, despite only seeing each other through webcams. One day, while Thomas is connected, Cathy is murdered in front of his eyes. But when he calls the police to try to do something he realises that he doesn't even know her real name or address. Apparently the only witness, Thomas will soon find himself involved in the investigation held by Claire (Emilia Fox), a young police officer and web specialist.