Video journalist Jonas Brand is on a rail journey from Zurich to Basel when stock trader Paolo Contini appears to throw himself from the train to his death. Brand sets his footage of the aftermath of the incident aside to investigate a strange coincidence: two 100-Swiss-franc banknotes bearing the same serial number have come into his possession. Sensing an opportunity to graduate from celebrity journalism to serious investigation, he has the banknotes analysed, with bizarrely contradictory... and fatal results.