In Magikos, life is dictated by the Book of Fate's ancient predictions, including the birth of a royal Chosen One who will save the realm. Princess Marabel has grown up in the shadow of her twin brother, Marco, who everyone assumes is the true Chosen One. While Marco is adored and given every opportunity, Marabel is overlooked and has to practice her sword fighting in secret.

But on the night of their thirteenth birthday, Marco is kidnapped by an evil queen, and Marabel runs to his rescue. Outside the castle walls for the first time, accompanied by her best friend and a very smug unicorn, Marabel embarks on a daring mission that brings her face-to-face with fairies, trolls, giants--and the possibility that all is not as it seems in Magikos.