Jason and Allison always had it easy, that was until they turned 15. They always did everything together, going to the basketball court, concerts, Starbucks, you name it! On their 15th birthday, their parents reveal a shocking secret, which probably explains why Allison is so different from the rest of her family. Who is she really? Is she the daughter of a normal family, or a daughter of Greek Mythology? "Not only did you break the sibling code, you broke me too."