Tarzan spurns the love of La, Queen of Opar. When he isn't trying to keep the Bolshevik Rokoff and Clayton (pretender to the Greystoke estate) from reaching Opar, he is attacked simultaneously by two lions, dropped into a pit when a volcano splits the ground, nearly sacrificed by sun worshipers, and so on.
| Actor | Role |
|---|---|
 Elmo LincolnTarzan | Tarzan |
 Louise LorraineJane | Jane |
| SScott PembrokeClayton | Clayton |
 Frank WhitsonRokoff | Rokoff |
| ZZip MonbergMonsieur Gernot | Monsieur Gernot |
 Lillian WorthQueen La of Opar | Queen La of Opar |
| CCharles GaySheik Ben Ali | Sheik Ben Ali |
 Charles InsleeProf. Porter | Prof. Porter |
| Charles InsleeChief of Wazini | Chief of Wazini |
| FFifi R. LachoyNot listed | Not listed |
 Frank MerrillArab Guard | Arab Guard |
 Joe MartinMan in Ape Suit | Man in Ape Suit |
 George B. FrenchNot listed | Not listed |
 Gordon GriffithNot listed | Not listed |
 Kathleen KirkhamNot listed | Not listed |