A former Annapolis cadet is thrown out of the Naval Academy for cheating on an exam. Of course he was framed, but he must enlist in the Navy to clear himself. Meanwhile he and his sweetheart search for a buried treasure on Lost Island, which everyone is after.
| Actor | Role |
|---|---|
 William Courtleigh Jr.Neal Hardin | Neal Hardin |
 William ConklinThomas Illington | Thomas Illington |
 Ed BradyHernandez | Hernandez |
 Henry StanleyPonto | Ponto |
 Charles DudleyNot listed | Not listed |
 Lillian LorraineAnnette Illington | Annette Illington |
| RRichard JohnsonJoe Welcher | Joe Welcher |
 Helen LackayeMrs. Hardin | Mrs. Hardin |
| BBruce SmithCaptain John Hardin | Captain John Hardin |