Mia tries to wheedle her way into a job at Dr. Lorenz's biomedical institute but balks after being asked to take part in a genetic study.

Mia's night out with Jasper leads to Dr. Lorenz's home where a medical emergency complicates her plans to access the professor's computer.

Dr. Lorenz's growing suspicions cause Jasper to question his burgeoning relationship with Mia, who finds a new confidante in her search for answers.

As Mia makes a last-ditch effort to get proof about Dr. Lorenz's experiments, Jasper begins to unravel over his feelings of betrayal.

With time running out, Mia turns to her friends for help in a life-and-death race to save the train's passengers.