The team are tasked with saving a nuclear power plant which is under cyber attack.

Jerry is hailed as the hero as disaster is averted at the nuclear power plant but threats still loom large. Meanwhile, the CySec mole is exposed.

It's a harassment and discrimination training day at CySec but all is not what is seems with the course leader, Hilary Bowen. Has Jerry met his match?

A rival GCHQ team find important information about the cyber weapon Eternal Blue. But when they refuse to share it, Jerry must think of a solution.

Jerry learns that a kidnapping group want him in an exchange for a hostage. Not keen on the idea, he comes up with a plan of his own.

After saving the day—and his own skin—Jerry is facing a bright future. Will he stay at GCHQ or go back to the US?