A dead body in the river presents Commissioner Klaudia Wagner with a new challenge. She is still psychologically affected after her last spectacular case and is struggling to work with her despised colleague Demel. Initial clues lead the two to a seemingly corrupt cucumber farmer, as the deceased was a seasonal worker from Romania. But soon there is another corpse. Who wants to eliminate these people? Klaudia is in danger of being swept away in a whirlpool of intrigue...