B 501, a newly developed controller for missiles, has disappeared despite the strict surveillance. Phillippe Tissout is sent by his boss to Paris to take over the case.
| Actor | Role |
|---|---|
 Pierre BricePhilippe Tissot | Philippe Tissot |
 Heinz DrachePierre Gilbert | Pierre Gilbert |
 Daliah LaviIrina Badoni | Irina Badoni |
 Jana BrejchováVioletta | Violetta |
 Charles RegnierHenry | Henry |
 Walter GillerRenato Balli | Renato Balli |
 Terence HillEnrico | Enrico |
 Gustav KnuthIgor | Igor |
 Anton DiffringBurger | Burger |
 Senta BergerJenny | Jenny |
| DDaniël SolaJoscha | Joscha |
| WWalter RegelsbergerGorba | Gorba |
 Hans UnterkircherBernard | Bernard |
| KKarl ZardaLedin | Ledin |
| EErica VaalJeanette | Jeanette |
 Paola PitagoraClaudette | Claudette |
| HHerr TuDr. Schang | Dr. Schang |