Marine lieutenants Dan and Jim fight bandits in the South American jungle, while competing for the attention of beautiful Joan Grant.
| Actor | Role |
|---|---|
 Richard DixLt. Danny Darrick | Lt. Danny Darrick |
 Lucille BallJoan Grant | Joan Grant |
 Chester MorrisLt. Jim Malone | Lt. Jim Malone |
 Steffi DunaTeresa | Teresa |
 John EldredgeJohn Henderson / El Vengador | John Henderson / El Vengador |
 Paul HarveyCol. Hill | Col. Hill |
 Horace McMahonSgt. Monk O'Hara | Sgt. Monk O'Hara |
 Dick HoganCpl. Ted Haines | Cpl. Ted Haines |
 Kirby GrantLt. Bob Hobbes | Lt. Bob Hobbes |
 Ann ShoemakerMrs. Hill | Mrs. Hill |
 Nestor PaivaPedro Fernandez | Pedro Fernandez |
 Abner BibermanGomez | Gomez |
 Selmer JacksonMedical Officer | Medical Officer |
 Ethan LaidlawBarnes | Barnes |
 John SheehanAirplane Seller | Airplane Seller |