The further adventures of Mike, Pi, Ram, Bec and Marcello - who, along with Alexandra Davis, make up the team at Catalyst Software - the hottest computer game company in town.
As the series opens, the kids are amazed to find that Alex has changed premises and downsized; as she's on the brink of financial ruin. The kids find a solution in high-flyer, Mathew Gallagher. After alienating him, the team finally convince him to invest in the company. He does so, however, on his terms, becoming the majority owner - something Alex isn't really comfortable with.
Ram is happy because he's getting on well with Mathew's daughter, Penny. She too is a whiz at computers, and would love to join the testing team. Mathew, however, is more interested in developing Penny as a basketball player. He refuses to let her work at Catalyst.
Mike and Pi's romance (that begun in the last series), still blossoms, while the other kids are blissfully unaware of it. Pi likes it this way. She thinks that if the others found out, it'd change everything. However, Mike isn't comfortable with keeping it a secret.
Virgil, the wacko Artificial Intelligence created by Alex, is as much trouble as ever. In this series, he's very determined to experience 'real life'. More than ever, he wants to get out of 'the box' into the 'real' world with the kids. It creates havoc when Ram and Penny build him a mobile chair, and then a body. How do they explain to Alex when Virgil uses the body to run away?
Marcello is still trying to get rich. Several of his schemes almost bankrupt the company, but one of them - involving music on the Net - succeeds. Before his inevitable downfall, Marcello is, for a brief moment (and only on paper) a millionaire!
More than ever, our heroes find that expertise in playing on a computer sometimes helps with real life problems; sometimes it doesn't. During the series, they confront a crafty hacker, they reluctantly go on strike and the Army even raid them! Pi finally confronts her father about her past, and, in a final episode climax, Ram realises just how blurred the line is between reality and games! Our heroes, as always, discover that their resourcefulness and creativity can solve any problem; real or virtual!