A missing child sets four families on a frantic hunt for answers as they unearth a mind-bending mystery that spans three generations.

Through the eyes of psychologist Thomas Meiberger, we examine the mental, social and psychological factors of how and why criminal acts are committed. Even in cases that seem unsolvable, Meiberger is able to follow a thread back to the suspect by interpreting the sequence of events, the victim's behavior and subtle details that are invisible to others.

The company soldier Hannah and the scientists Gavin and Dimitri are researching an algae project on board the Rubikon space station, which is supposed to permanently supply humanity with oxygen and food. But suddenly the earth disappears below them in a brown, toxic fog and all contact is broken off - are they the last survivors of humanity? Should they initiate the safe station, dare the return flight and thereby risk their lives?

Annika dreams of having a synthetic mermaid fin -- expensive fun for the supermarket cashier who longs for distraction from the worries of her everyday life.