Present day Sydney, but this is not the city you know. Super powered heroes and villains stalk the streets, swim the waters and soar through the skies. Every one of them registered, catalogued and government approved. Most of them anyway. Sasha and Alexis, are on the hunt for the people responsible for their parent's deaths. Their quest for knowledge soon becomes one for revenge and then of survival as the shadowy mastermind behind their tragedy once again uses them as unwilling tools. Along the way they gather other allies with unusual powers and abilities and set their sights on bringing down the mysterious organisation and its sinister leader.