Hoppy is leading a scientific expedition and the Chinese who have a hidden settlement nearby are trying to stop them. Saulters and his outlaw gang are also in the area looking for a gold mine. When Saulters men attack, the gold mine is found. Hoppy agrees to file for the Chinese and heads after Saulters in the chase to the land office.
as Hopalong Cassidy
as California Carlson
as Johnny Nelson
as May Soong
as Jennifer Kendall
as Slade Salters
as Clay Elliott
as Quan
as Doy Kee
as Malcolm Birdsall
as Clanton
as Hollister
as Williams
as Yeng
as Balto Stubbs
as Shoots Elliott
as Bar 20 Cowhand
as Henchman
as Horse Seller
as Sheriff Mulhall
