After Tarzan rescues victims of a suspicious fire at a Greystoke warehouse in London, reporters, including Jane's mom, accuse the Earl of negligence.

Tarzan, Jane and the Earl face more sabotage when they discover someone has planted toxic pesticides at the Greystoke organic farm in Scotland.

While tracking the mastermind in Morocco, Tarzan and Jane learn that Greystoke bulldozers have been stolen and are headed for Tarzan's Jungle village.