Nils skeptically investigates the apparent drowning and beaching on Poel island coast of fit student and amateur lifeguard Florian Hartmann. He was unlike to have gone into the water the fatal evening, being drunk after celebrating graduation with girl friend Julia Faber and buddy forever and fellow lifeguard Nikolas Langer. Florian and Nikolas planned a gap year in Australia, again combining study and the world's best lifeguard program. Chief Jan Reuter hears from his schoolmate, Florian's father Dirk, he opposed the boys plans, wanting to groom his son as firm CEO successor, having obtained a suitable diploma. Questioning beach barman Robin König and others raises doubts about anyone's alibi, yielding potential motives, including Julia's infidelity, and eventually the real story of Florian's last day and altered plans.
—KGF Vissers