Jungle roamer Johnny Weissmuller (playing himself) is exploring the African waters of Magi somewhere in mid-Cannibal Valley.

Weissmuller decides to report the death to John King, leader of the white colony in the Magi.

King is in charge of mining cobalt for the government, and confides to Weissmuller that recently a few shipments were stolen by looters passing off as crocodiles.

After a series of unfortunate events, including getting in the way of a giant-sized eagle, Weissmuller discovers a cave filled with the looted goods.

He finds out from a Magi native, Luora, that the cobalt hoarders are members of the tribal clan, the Shenzis.

[6] A reviewer for the magazine Variety opined that the "pretentious" film catered only to "juvenile audiences", while the Motion Picture Guide found it to be "pretty decent".