Long-distance bus driver Beni Gisler (Michael Neuenschwander) sees the man on the bridge, but he can no longer do anything. The body slams against the windshield and is thrown away. In his previous life, Gisler was a train driver and was involved in suicides several times. The recent incident therefore awakens traumatic memories. Commissioner Flückiger (Stefan Gubser) knows Gisler from his military days. Supported by the responsible psychologist of the care team (Stephanie Japp), he takes care of Gisler. It soon turns out that the dead man had a high dose of benzodiazepine in his blood. Under the circumstances, there was no way he could have thrown himself off the bridge. The identity of the possible victim also raises questions. Commissioner Flückiger andColleague Liz Ritschard (Delia Mayer) begins to investigate.
Clarifying the victim's true identity proves to be the first challenge. A trail leads her into the construction industry. The former patron (Markus Graf) of a now successful construction company has similarities with the victim. However, he is said to have died 13 years ago. What are his widow (Saskia Vester) and son (Roland Bonjour) hiding? At the same time as the investigations are being carried out, Flückiger is struggling with his personal connection to the case. The fate of his comrade Gisler will not let him go. Gisler struggles with severe stress disorders and aggressive outbursts. Despite the psychologist's therapeutic help, he swears to personally hold the perpetrator accountable.