When a deadly fever grips the town, Doctor Helm's medicine is the only cure. In an ambitious bid to assume power, Captain Grisham steals the antidote, which Montoya desperately needs, and frames the Queen of Swords for the crime. The dark beauty is forced to unmask the real culprit – or watch Marta, Montoya and many of the townspeople die.

Marta's long-lost love, Leonardo (Oliver Haden) visits Saint Helena in search of his paramour and becomes enmeshed in Montoya's scheme to trap the Queen.

The Queen of Swords and Grisham (Tessie Santiago, Anthony Lemke) are trapped in an abandoned mine with only their vendettas to keep them alive.