A coroner finds a capsule in the head of a heavily mutilated corpse, containing a phone number and single word: the name of his daughter.
Klara is going to die today unless she kills her husband instead. The Calendar Killer has given her that impossible choice. When Jules starts his night shift at a telephone safety helpline for lonely women on their way home, Klara's call reaches him. He soon becomes her last hope for survival and races against time to save her.
A long-running German television series about a two-man team of highway police, originally set in Berlin and later in North Rhine-Westphalia.
