Reboot — I.I. Davidson

The secret is now out about the Ghost Network's identities . . . and everything is in danger of going up in smoke. With evil tech icon, Roy Lykos, on the prowl, John and the gang head to a top-secret center in the Sahara desert to prepare for battle. This center is a bit different though -- every student has the same special implants and the competition is sky-high. 

As the day of reckoning approaches, the Ghost Network gang will need every bit of help they can get from their extraordinary classmates if they are to wrestle back control of their minds and bodies.