After waking up in class feeling disoriented, Mia grows increasingly distressed when she discovers nothing in her life is how she remembers it.

Struggling with mysterious symptoms, Mia tries to track down Lorenz, certain that she will be able to provide answers about what's happening.

Mia strikes an uneasy bargain that could help get to the bottom of her missing memories. But upholding her side of the deal means flirting with danger.

As Mia's feelings toward Jasper begin to change, her friends aid her desperate search for information by engaging in some high-tech espionage.

With time running out, Mia sets a risky plan in motion to uncover the secret lab and find a solution to her rapidly deteriorating neurological state.

Loyalties are tested after Mia locates the red notebook, with lines drawn between the friends amid a last-ditch effort to save her life.