While flying Furio and Vittorio (L'inafferrabile) receives a radio signal for help from certain Claudio Valli who is imprisoned in Cubango, Angola.
Furio returns to face the dangers of the African jungle to free a fool whose desperate appeal has reached him through the radio call. A mysterious Chinese gives him a thousand pitfalls to prevent him from revealing the secret of the Throat of the Lions, and unleashes the ferocious Leopard Men against him. What will the unfolding of this exciting new episode be?
