On the mystic island of Lemuria, the cult of Ubasti seek the Egyptian Princess Nadji to sacrifice so that their goddess Ossana, whose soul resides in Nadji's body, may be resurrected by Black Magic. Nadji is located in the Far East port of Suva, but shielded by the White Magical powers of Frank Chandler, an American raised by Eastern mystics who is also known as Chandu. When Chandu takes a voyage alone, however, the evil Voice of Ubasti is able to magically spirit her to Lemuria, where Black Magic reigns supreme. Chandu sets out in pursuit with his sister Dorothy, niece Betty and nephew Bob; but, shipwrecked on the magic island, Chandu finds his family also held prisoner for sacrifice while he is plunged into an endless maze of caverns beneath the evil temple, where both his mortal and magical strength seem rendered useless.
Bela Lugosi
as Frank Chandler (Chandu)
Maria Alba
as Princess Nadji
Murdock MacQuarrie
as The Voice of the Ubasti
Clara Kimball Young
as Dorothy Regent
Dean Benton
as Bob Regent
Phyllis Ludwig
as Betty Regent
Wilfred Lucas
as Capt. Walker
Josef Swickard
as Tyba, the White Magician
J.J. Clark
as Vitras
John Ince
as Suvanese Police Commandant
Louise Emmons
as Sisaba the Hag
Iron Eyes Cody
as Cat Man
