In Liverpool there's a gang war between the Mods (who dress in the latest fashions and styles) and the Rockers (who are more into the '50s "greaser" look). Ricky, the son of a wealthy businessman, is a Mod guitar player, and in a gang fight with some Rockers, his girlfriend is killed. He leaves Liverpool for the continent and winds up in Rome, where he becomes involved with his father's mistress.
| Actor | Role |
|---|---|
 Ricky ShayneRicky Fuller | Ricky Fuller |
 Joachim FuchsbergerRobert Fuller | Robert Fuller |
 Elga AndersenSonia | Sonia |
 Eleonora BrownMartine | Martine |
 Rudolf LenzCapt. Landers | Capt. Landers |
 DonovanSelf (uncredited) | Self (uncredited) |
 Udo JürgensUdo | Udo |
| HHans ElwenspoekJeremy | Jeremy |
 Orchidea De SantisYasmine | Yasmine |
| JJürgen DraegerSteve | Steve |
| SSolvi StübingDiana | Diana |
 Loris BazzocchiPanzer (uncredited) | Panzer (uncredited) |
 Christian BrücknerGru / Hinke (voice) (uncredited) | Gru / Hinke (voice) (uncredited) |
 Omero CapannaHitman (uncredited) | Hitman (uncredited) |
 Enzo CerusicoGru (uncredited) | Gru (uncredited) |
 Francesca Romana ColuzziGirl in Parisian Bistro (uncredited) | Girl in Parisian Bistro (uncredited) |
 Wolfgang CondrusKakao (voice) (uncredited) | Kakao (voice) (uncredited) |
 Solveyg D'AssuntaValentine - Prostitute in Bar (uncredited) | Valentine - Prostitute in Bar (uncredited) |