For the last five months, Jean "Daphne" O'Hara has been a superhero, shooting arrows at aliens shoulder-to-shoulder with six of her classmates. She's not sure if she can call them "friends." Friends know about one another, and there are a lot of things Daphne wishes she could have left behind when she moved to the US from Ireland. The team is called to the Detroit River, where an aquatic alien has been attacking boats and tourists. Daphne must confront her worst fear. Because people will die if she doesn't.