When enigmatic genius Iris Nixon cracks a string of complex online puzzles, she is led to a piazza in Florence, where she meets charismatic entrepreneur Cameron Beck. He invites her to work with him to unlock a powerful and top-secret piece of technology.

In a desperate bid to escape the island, Iris blackmails Teo to botch the police investigation and help her flee. But when put under pressure by Krauss and Baptiste, Teo is given no choice but to betray her location, forcing her to make a passing-defying escape.

Joy is taken captive by Baptiste, while Iris contacts conspiracy theorist Alfie and asks him to meet her in Rome to help her with the next phase of her plan. But with Teo being directed by Krauss, both Joy and Iris are delivered into the hands of Cameron for an explosive showdown.

Iris is stripped of everything she has built, but escapes the island and contacts online conspiracy theorist Alfie, who arrives in Rome.

Iris uses her wits to get out of a corner and enlist policewoman Nico. Joy meets the mysterious genius, Jensen Lind.

Iris concocts an audacious plan to rescue Joy, involving a dramatic reunion with Cameron. They are forced to flee with Alfie and Nico.

Devastated by a major setback, Iris makes a stand against the cops. Cameron's financial benefactor steps up control of his project.

Iris makes a potentially suicidal return to Caliburn. A showdown exposes the terrifying true purpose of the device.