Center Of Four is a mysterious mission 4 girls of the age of 12 must go one. Leia Skywalker, daughter of Senator Padmé Naberrie Skywalker and Jedi Knight Anakin Skywalker. Twin sister of Luke Skywalker. Primrose Everdeen, sister of hunter girl Katniss Everdeen. Amanda Lockhart, fairlie sister of Jess Lockhart. Annabeth Chase, demigod daughter of Athena and Professer Chase.