Enemy Found Book 8 of Fierce Girls At War "The aliens killed half my company including my commander at Southport. It's time to pay them back in full." - Captain Eva Zhang, CO, Tiger Company, 3rd Battalion, Colonial Rangers, New Hope Colony, Tau Ceti 4, China "It's been more than two weeks since we got shot down and landed in this valley and finally we get to use the crossbows Varsity Team " -Monica Keller, age 14, 2nd year student, New Hope Academy, New Hope Colony, Tau Ceti 4, Germany It's been less than three weeks since the alien invasion of the New Hope Colony on Tau Ceti 4 began and a week since the aliens were defeated by Major Claudia Stairs and her companies of Colonial Rangers at the Battle of McKinley Pass. Now the aliens are building up their forces hundreds of miles south of Winter Haven. On a visit to the northern settlement General Jamison decides that it's time to bring Colonel Colin Fox and Claudia Stairs in on the secret that Commander Rick Cassidy and Gunnery Sergeant Molly Pickford have been keeping for over four years. Back on Earth the CSS North America departs for the New Hope Colony as scheduled just two months after the colony transport ship Marco Polo began its journey to the colony carrying over 5,000 passengers including 2,000 Colonial Rangers, one of whom is Rick Cassidy's sister Lieutenant Bridget O'Brien. The cargo supply ship Asia is unaware of the invasion and they are less than 2 months away from arriving at the colony. Rick Cassidy's daughter Ciara has made a strong impression on the Rangers on the ship.

The teen holds the ship's top scores in the Rangers' VR programs and has been teaching them to improve their own marksmanship and skills preparing to fight the colony's fearsome predators. The first group of civilians who volunteered to fight the aliens have finished their training and they get set to join the depleted Ranger units that took heavy casualties during the earlier battles. They will serve under some of the female officers who have been living in the house that was once Cassidy's private residence. Most will be going to Winter Haven where Ranger air and ground scouts are out searching for signs of the aliens heading north and it's not long before they find them. The looming Battle of Winter Haven may be the end of the human presence on the eastern end of the Alpha continent. In the mountain valley where the transport Cairo crashed on the first day of the invasion Rick Cassidy and Molly Pickford step up the training of the girls and teachers from the New Hope Academy who survived the crash with them. Rick finds that some of the girls have skills he hadn't expected that might contribute to their survival in the future while others are selected for their leadership abilities to be squad leaders. Cassidy and Pickford have to decide whether letting the group in on their secret will help motivate the young trainees even more and raise their level of trust within the group.

Demon wolves up on the valley's eastern rim are spotted watching Cairo's survivors and the point is made that they will have to fight the predators once they come down into the valley if they hope to leave it once the winter is over. The winter is less than two months away and the wolves will come down once the river and lake freeze over. Material to support the hundreds of volunteers being trained and the thousands of refugees who have fled to the West is in short supply and Major Naomi MacCaffrey turns to some of her housemates for advice. The question of the hour is What would Cassidy and Pickford do? The result will be a proposal to conduct a raid behind enemy lines.