One Nurse. Trillions of microbes. A deadly WWI battle. In France of 1916, battlefield nurse Sister Annie Barnaby encounters a strain of lethal bacteria while treating a patient with dysentery. This army of bacteria invades deep into her gut, rallying the resident microbes to fight for their lives—and hers! Enter the phage, deadly microscopic predators, ready to wage war and protect their host. This graphic novel examines what happens when bacteria attacks the body and how the body's defenses respond, drawing upon parallels to wartime combat.