Carefully measuring the success of Republic's Clyde Beatty serial Darkest Africa, Columbia top-billed wild animal hunter Frank "Bring 'Em Back Alive" Buck in the 15-chapter Jungle Menace. The story takes place in the mythical Asian province of Seemang, where rubber planter Edward Elliot (John St. Polis) owns a huge and profitable plantation. When one of Elliot's shipments is hijacked by river pirates, his daughter Dorothy (Charlotte Henry) and her planter friend Tom Banning (William Bakewell) narrowly escape with their lives. Things get worse when Elliot himself is shot by an unknown assailant, at which point soldier-of-fortune Frank Hardy (Buck) takes a hand in matters. For the rest of the serial, Hardy tries to ascertain the identity of the mysterious villain who wishes to drive Elliot off his property, while poor Dorothy is subjected to one jungle peril after another.