When someone kills Diego Lovelace, the only man to have been kind to 'the Maid' Roberta, any shred of faith and hope left within her is destroyed. For her, the only recourse is to find those responsible - allegedly agents of the United States of America - and make them suffer the same fate as her late master. Meanwhile in Roanapur, the mafia bosses are getting nervous about the world's deadliest woman running wild and drawing the attention of a superpower to their comfortable nest of sins. When Diego's son, Garcia Lovelace, arrives asking the Black Lagoon company to track her down, this seems the perfect opportunity to avert disaster. But can they stop Roberta before she reaches the United States Army and, inevitably, brings their wrath upon all of Roanapur?