A Nigerian youth is found stabbed under a bridge in Lucerne. The commissioners Reto Flückiger (Stefan Gubser) and Liz Ritschard (Delia Mayer) assume, based on the first indications, that it is a question of a settlement in the drug milieu. The young man was already well known to the police: Ebi Osodi (Charles Mnene) was a so-called UMA – an unaccompanied minor seeking asylum. He came to Switzerland without his parents and has been caught dealing several times. For the new police chief Mattmann (Jean-Pierre Cornu) it is clear that this case should be closed as soon as possible. After all, the delinquent Ebi would have been deported immediately if he had reached the age of majority .
But the more the chief of police pushed for efficiency, the more Reto Flückiger and Liz Ritschard became interested in the fate of the boy. And when the dark-skinned Jola (Marie-Hélène Boyd), another underage asylum seeker from Nigeria, becomes the focus of the investigations, Ritschard and Flückiger realize that the young woman must be the key to the case. But investigations keep getting stuck. And more than once Flückinger has to ask himself whether what he sees is real or just a hallucination. According to medical findings, severe migraine attacks are the reason for his increasingly severe headaches and this also causes partial shifts in perception.