Not a children's program. Lisa Wagner will never forget that night. She had intended to celebrate carefree at a party with her sister Emma. Instead, she finds herself in a filthy cellar dungeon and witnesses the murder of her sister. However, the real nightmare begins only after her escape. Emma's murderer is quickly identified, but the evidence is insufficient for an arrest. Together with the prosecutor and the homicide investigator, Lisa sets out to track down the perpetrator.