On May 6, 1937, the German zeppelin Hindenburg crashed while attempting to land at Lakehurst New Jersey, killing 35 people and destroying the magnificent airship. After an exhaustive investigation, it was found that the most likely reason for this was an accidental static discharge which ignited a leak in one of the massive ship's hydrogen cells—Officially. Not long after that, a security guard in New York City was murdered during a break-in at the headquarters of the Townsend Cruise Lines late one night in September of 1938. The following month, the SS Brazilian Queen left New York City for the first of many trips to South America. Among the many businessmen and families on vacation, the Brazilian Queen also carries a deadly assassin tasked with killing a member of the Brazilian Government, which could change the balance of power in South America if the assassin is not stopped.FBI Special Agent Anthony Wells and his partner Special Agent Oscar Cooper are tasked with sailing onboard the SS Brazilian Queen's maiden voyage to South America to eliminate the assassin before the ship reaches Rio de Janeiro and hopefully maintaining the balance of power in South America—no matter the cost.However, with time running out and Cooper put out of action by the assassin's bullet, Wells receives the help he needed from the unlikeliest of places, which leads Wells and his impromptu partner to one of the most shocking and improbable assassins.