In Genoa, amongst the underclass living on the fringes of the law, Machedi organises the trafficking of women, to be exploited and sent off to who knows where. One of these women is Alda, who has evaded the ring once, but when her boyfriend is arrested, finds herself back in Machedi's net.
| Actor | Role |
|---|---|
 Eleonora Rossi DragoAlda | Alda |
 Marc LawrenceMachedi | Machedi |
 Ettore ManniCarlo Sozzosi | Carlo Sozzosi |
 Silvana PampaniniLucia | Lucia |
 Vittorio GassmanMichele | Michele |
 Tamara LeesClara | Clara |
 Sophia LorenElvira | Elvira |
 Enrico Maria SalernoGiorgio | Giorgio |
 Ignazio Balsamoil francese | il francese |
| AAntonio Nicotral'avvocatino | l'avvocatino |
| BBarbara FlorianFanny | Fanny |
| FFranco BolognaAgostino Barilli detto 'il gorilla' | Agostino Barilli detto 'il gorilla' |
| GGianni BonosSpartaco Fossati detto 'Gancio' | Spartaco Fossati detto 'Gancio' |
| DDuilio D'AmoreAmerigo Consiglio detto 'Pignatta' | Amerigo Consiglio detto 'Pignatta' |