Mollyco Company employee George Spalding disappears after a flight into northern British Columbia's interior wilderness to search for gold.

On arrival at the headwaters, Dupre accidentally crashes the aircraft during the water landing, yet he and Spalding survive, shaken but unhurt.

From there, the pair become involved in suspicious activities with Silas McGee, a prospector and hermit intent on protecting his silver mine.

Encountering his brother, Ian McGee, their search turns into a whodunit mystery/adventure, involving mistaken identities, greed and murder.

While he directed and starred, his son Fraser Clarke Heston came up with the idea, wrote the script and acted as producer, while his wife Lydia is credited as still photographer.

[citation needed] The Beaver floatplane was recovered from the lake and transported to Kelowna, British Columbia, where it was fully restored, put back on wheels and sold to an American business, which licensed the aircraft as N323RS.

The picture is not without shortcomings, but is long on good performances, charismatic people in the three principal roles, compelling outdoor aerial sequences in the Cassiar Mountains of British Columbia and high-level suspense throughout.