To escape Darkwater Island, located in the middle of a mystical fae sea, Tria and her friends must complete the Challenge, a series of dangerous trials that take place in the magical, ever-changing catacombs beneath the island. With her are Brodin, a hot guy with secrets. Her roommate, Jacey, a fierce friend whose loyalty will be tested. And Akimi, a tree nymph with her own agenda. But working together to complete each challenge isn't the only trial they face. They're also being hunted...