The country is shocked after the murder of President Sheridan. You wake up, wounded and with amnesia, on a lonely beach on the east coast. The only clues to your identity are a tattoo with the number XIII near your lock and the key to a safe. Despite having no memories, you discover that you have the reflexes of a highly trained, professional fighter. You start to uncover your past, realizing that you played a role in the assassination of the President of the United States and uncovering the most impressive conspiracy ever implemented in the country's history.