Alison was different. She was just different. After moving to a new house and a new school, she figures out who she really is. A part demigod, angel, fairy and mermaid. She becomes part of a superhero gang and meets someone who changes her life... Justin Bieber.

When Pythia, who is being guarded by a python, tells the Olympians that there next adventure lies in Troy, they find out that one of the princesses have been taken. Will they find her and why is she so important to the Olympians?