A dead pensioner in the park is a puzzle for inspectors Ballauf (Klaus J. Behrendt) and Schenk (Dietmar Bär). Did the old man get into a fight? Was another person abducted, as a witness reported? The investigators' foreboding soon becomes certain: they are dealing with a kidnapping drama. Daniel, the 22-year-old son of builder Markus Wächter, is the victim. The kidnappers are demanding "no police" – and one million euros. The kidnapping has parallels to an earlier case in which the perpetrators were never caught. Have they struck again now? While Ballauf and Schenk feverishly search for clues, the kidnapped Daniel hopes to be rescued in a dungeon.