After completing a covert mission in southern Thailand, CIA agent Gunja finds herself forced to fight off operatives who've been ordered to take her out at all costs. She survives and after two years of laying low, re-emerges in Bangkok to face her old foes and foil a plot to detonate a bomb in the city.

As sea pirates threaten to invade their kingdoms, three queens of Langkasuka must band together to defend their lands and peoples.