A beautiful woman, apparently a sophisticated Miss, is killed while skiing in Candanchú, an accurate shot in the head. But she is more than a beautiful model. It is a secret service agent of the terrorist organization IAAT His death triggers the alarm at the headquarters of the organization and the supreme leader, the bold and elegant Mr. Alfa , decides to take matters into. Three super-they are called to investigate the case, it is the courageous Mayor Sam Stevenson (Paul Naschy), the shrewd Marcello Antonelli (JL Vazquez), and the beautiful and reckless Alferez Allyson Love (Anne Karin).
| Actor | Role |
|---|---|
 Paul NaschySam Stevenson | Sam Stevenson |
 Julia SalyJacqueline Genet / Mantis | Jacqueline Genet / Mantis |
 José «Saza» SazatornilMister Alfa | Mister Alfa |
 Anna KarinAllyson Love | Allyson Love |
 José Luis López VázquezMarcello Antonelli | Marcello Antonelli |
 Fedra LorenteMari Pepi | Mari Pepi |
 Paloma CelaMarquesa de Andrade | Marquesa de Andrade |
 Yolanda FarrTécnico | Técnico |
 Antonio GameroPresentador | Presentador |
 Fernando BilbaoKong | Kong |
 Taida UrruzolaGuía | Guía |
| AAdolfo ThousPortero | Portero |
 Analía IvarsManicura | Manicura |
| AAlfonso CastizoÁrbitro | Árbitro |