Retired army colonel Ferdinand Devuyst is obsessed with imposing a 'security plan' to divide the country in 100 sectors, which nobody may leave without ankle device control. To force the government, he first demonstrates his ability to place a bomb, next abducts the home affairs minister from the park where he walks his dogs. Team Rox must find the fiend and rescue his hostages, which requires traversing a minefield.

Then city museum has the Mona Lisa on loan for a prestigious exhibition. Just before it's to open, Leonardo's masterpiece is stolen by a cat burglar who enters from the roof. The team recognizes his moves on security video as typical for a break-dancer. So Xavier and Olivia check out a street gang into hip-hop battles, and Rox analyzes that Vince fits the patterns. Following him, they learn the accomplice in the museum is the suspended director's, now acting, assistant Belle Bardot.

Mister Gold's criminal team intrudes the satellites control center to transform one into a deadly space weapon to blackmail governments for an obscene fortune. The first attempt fails as they need center chief Buck's fingerprint. So Rox is assigned the unwilling protégé's discrete bodyguards, but a trick with a cleaner in cahoots still gets the fiends control. Rick must undo the damage his ill-considered history exam cheating plan did on Rox and hack the center's computers while Xavier physically outsmarts the villains.

Rox is mobilized when professor Nitriet is kidnapped with a fatal virus and its antidote. They must deliver fake ransom cash. Rox's sensors work out the professor staged his 'kidnapping', but he must be stopped before he can poison the city's drinking water.

The boys convince the colonel, secretly a fellow fan, to accept a case normally left to the police: death threats to Kevin, the 'alien' star in their favorite SciFi series Woxa. All three under cover, they can barely prevent 'accidents' on set from causing real damage and soon suspect Kevin's frustrated understudy, Lukas, whose girl friend Jessy works in the art and special effects department.

Valuable shipments are stolen repeatedly, whole container loads, from the main port. Rox must find the thieves, starting on the assumption it may be an inside job within security chief Steinskopf's team. Rick poses as schoolboy to get a class tour, which yields info on the procedures, while ROX's sensors detect irregularities in trucks entering and leaving the docks.

Military supplies, including arms, keep getting stolen using tranquilizing gas on transports to lieutenant De Crem's barracks. Suspecting an inside job, the colonel orders Rox to go undercover as recruits. The vain CO checks out, but the real culprits are found.

The colonel has got wind that 'the Clan', Rudolf's ultra-right private militia, may harbor terrorist plans. Thanks to a fake identity as drop-out crack soldier prepared by Rick and a state of the art machine gun, Xavier can infiltrate as explosives-expert recruit and thus finds out they plan to bomb the royal palace. Rudolf's sycophantic orderly Hugo's suspicions ultimately get Xavier and Oliva, who foolishly assumed him in trouble far to soon, caught. Rick and Rox must free them and stop the terror plan.

Several public buildings have been destroyed by bombs, luckily without fatalities. The team notices that several are being rebuilt by contractor Joseph Bauwens, who gets the contracts from public infrastructure official Alfred Nobelmans. By the time the team finds out hey are in league, bombs are already placed in a major rail road station.

The top-secret cyborg of the secret service has been stolen from a secret HQ lab and reprogrammed by rogue agent Lars Trigger to obey only him, not agency chief Philip Geers. ROX must recuperate the cyborg, before Lars can abuse it. Even Xavier proves physical powerless, so they only hope is reprogramming the cyborg with their Rox tool.