After three years without any notice from her frightful husband Lord Byron Hastings, Lady Vivian Hastings learns from her brother-in-law she has to abandon her frivolous lifestyle and enter a cloister as all her family's goods, properties and titles are sold to raise money for an expedition to the Amazon River. Indeed, it appears as if Lord Hastings has finally found the legendary city of Guyanacapac and its immense riches somewhere in South America with the help of the local indigenous Moxtechica (Mox). Desperate and pregnant from her lover, Vivian decides to join the expedition and visits Dr. Livesey in search for help. Reluctantly, Dr. Livesey introduces her to the former pirate and cook Long John Silver whose help Vivian needs if she wants to take command of the expedition, thus prepar