It is 1837, and for the luxuriantly bearded Pirate Captain and his rag-tag pirate crew, life on the high seas has gotten a little dull. With nothing to do but twiddle their hooks and lounge aimlessly on tropical beaches, the Captain decides it's time they had an adventure. A surprisingly successful boat raid leads them to the young Charles Darwin, in desperate need of their help. And so the pirates set forth for London in a bid to save the scientist from the evil machinations of a diabolical Bishop. There they encounter grisly murder, vanishing ladies, the Elephant Man — and have an exciting trip to the zoo.