A mysterious killer is stalking the streets of the Oasis, and detectives Sapphire Stone and her partner Andy are assigned to the case. It doesn't take them long to figure out that the killer is not human, but a rogue robot.

Meanwhile, famous soap-star Alex Lavelle is fighting his own battle against a fanatical stalker, and has bought a robot bodyguard to protect him.

When Sapphire reveals to her superiors that the killer is actually a machine, the army take over. But to catch their quarry will require superhuman effort.

Fortunately the army has access to some superhumans. Before departing the Oasis, Dr Grayson's assistant Dragan Vesnic froze the Lazarus cyborgs – and the doctor's own son, Raphael "Mission" Grayson.

With the help of Dr Naomi Vaughan, the cyborgs are brought back to life. But they refuse to cooperate, and Mission is woken as a last result. However he is a grudging recruit, and only Naomi can keep him in line.

Sapphire joins Naomi, Mission and the army to track down the killer and Alex Lavelle, who has disappeared. They will need all the help they can to stop this menace before his killing-spree escalates.