Sam Fisher is dispatched to a lighthouse off the coast of Peru. He infiltrates via zodiac to find and rescue a computer programmer - Bruce Morgenholt - who has been captured by a Peruvian revolutionary group known as 'The People's Voice', led by Hugo Lacerda. It is revealed that Morgenholt was kidnapped by Lacerda so his knowledge of Philip Masse's information warfare algorithms could be obtained. Sam discovers that Lacerda was hired by a third party for the kidnapping and his group have been paid in advanced weaponry and equipment, beyond that of usual terrorists. When Fisher locates Morgenholt it is too late, as he discovers he has been tortured to death by Lacerda's thugs. Fisher is also sent to assassinate Lacerda as a target of opportunity. While on site Fisher locates the information that was extracted from Morgenholt concerning the Masse Kernels and the team promptly has it deleted. Sam then learns after interrogating a guard that Lacerda has left the area aboard a ship called the Maria Narcissa, which has suspected involvement in illegal arms trade. Extracting from the top of the lighthouse, Fisher quickly regroups as he and his support team move to intercept the Maria Narcissa out at sea.