A group of youngsters find a letter in a bottle that belonged to Ernest Hemingway and supposedly leads to a hidden treasure.
| Actor | Role |
|---|---|
 Gilberto de AndaNot listed | Not listed |
| RRodolfo de Anda Jr.Not listed | Not listed |
 César BonoNot listed | Not listed |
 Andrea NoliNot listed | Not listed |
 Mario AlmadaNot listed | Not listed |
| MMartha AcuñaNot listed | Not listed |
 Julio AlemánNot listed | Not listed |
| MMichel BosMarine | Marine |
| MMiguel CouturierGeneral | General |
 Rocío VerdejoNot listed | Not listed |