The U.S. Army asks Hoppy to investigate when a herd of horses desperately needed for the Spanish-American War is stolen from the ranch who was supposed to supply the herd. The ranch workers insist the horses were rustled by Mexican bandits, but the Mexican authorities claim that no herd of horses crossed the U.S.-Mexican border, legal or illegal.
| Name | Type | Role | |
|---|---|---|---|
| Harrison Lowe | Writer | ||
| Derwin Abbe | Director |