Rot Masters is a protector by nature. Driven by the losses of his past, he fights alongside the Hell Squad to protect the survivors of an alien invasion. Leading the Ninth Squad, Roth is renowned for his talent for choosing the perfect time to engage in combat. However, he knows they need more information about the predatory invaders - something that could turn the tide of the battle. Roth also knows that the woman he rescued from an alien laboratory holds secrets that he desperately wants to uncover. Former United Coalition Central Intelligence Agency agent Avery Stillman is trying to adapt to his new life. Suffering from horrific blackouts, she has only vague ideas about failed negotiations with aliens and the invasion, and then... nothing. Only how the huge soldier took it out of the tank in the laboratory. Now Avery struggles to remember anything and help in the fight, and also resists a maddening attraction to a man who demands to tell her what she does not remember. Roth soon finds himself torn between a sense of duty and the desire to protect a strong woman, with whom he falls in love. When they go on a reconnaissance mission into the heart of enemy territory, they are attacked and driven far from their base. Now Roth and Avery must join forces to survive against the aliens, but when her memory finally returns, her secret could destroy everything they hold dear.