A homeless young man, living in his delivery truck, is simultaneously adopted by a pranksome group of youngsters and made into a police informer. Believing that he is doing something good both for the other kids and for himself, he has no qualms.
| Actor | Role |
|---|---|
 Jacques SpiesserMarcel | Marcel |
 Isabelle HuppertYvette | Yvette |
 Yves RobertCommissioner Mancini | Commissioner Mancini |
 Michel AumontTaron | Taron |
 Pierre-Olivier ScottoBernard | Bernard |
 Anouk FerjacMarie-Paule Mancini | Marie-Paule Mancini |
 Jean DastéBerger | Berger |
 Maurice BénichouGarcia | Garcia |
| HHubert GignouxThe mayor | The mayor |
 Jean LescotLe Dantec | Le Dantec |
 Jean-François BalmerPottier | Pottier |
 Michel BaumannNot listed | Not listed |
 Roland BertinToutain | Toutain |
 Gérard CroceNot listed | Not listed |
| GGuilhaine DubosNot listed | Not listed |
 Jean-Michel DupuisDenis | Denis |
 Patrick FierryPierrot | Pierrot |
| GGérard GingueNot listed | Not listed |
| WWilliam MorelNot listed | Not listed |
| PPatrick NorbertNot listed | Not listed |
| JJean-Luc NorbertNot listed | Not listed |
 Jean BenguiguiNot listed | Not listed |
 René BoulocNot listed | Not listed |
 Valérie QuennessenNot listed | Not listed |