Robert Wells is an American born in China who, unbeknownst to him, has an Oriental half-brother. Wells' uncle sends him to help Ray Williams build bridges in China. Williams is in league with Chinese reactionaries and he discredits Wells by turning him into a drug addict. Wells eventually becomes an outcast and is in a stupor when he is found by his half-brother, Kong Sue, the son of the Lord of Thundergate, a powerful Mandarin reactionary.
Owen Moore
as Robert Wells / Kong Sur
Virginia Brown Faire
as Ellen Ainsmith / Jen Jue
Edwin B. Tilton
as James Sanderson (as Edwin Booth Tilton)
Sylvia Breamer
as Alberta Hayward
Robert McKim
as Ray Williams
Richard Cummings
as Jim Davis
W.E. Dyer
as Mike
Tully Marshall
as Suen Tung
Tote Du Crow
as Yuen Kai
Ynez Seabury
as Mey Wang
Willie Fung
as Minor Role (uncredited)
Bernard Siegel
as Minor Role (uncredited)
