It's the dawn of a new era for Egypt as Cleopatra and her brother, Ptolemy, are welcomed to the throne after their father's death. Long overlooked by his father in favor of the beguiling Cleopatra, Ptolemy is determined to prove his ability as both man and king --- but, at 11, he is no match for his elder sister, who's quick to assert her primacy throughout the land. Their sister Arsinoe is torn between her siblings in one of history's greatest power struggles. When Cleopatra is forced to flee a rebel uprising, Arsinoe decides she has no choice but to follow her sister into exile. Yet while Cleopatra gathers an army to retake the crown, Arsinoe begins to doubt whether her sister is the champion Egypt needs.

Abandoned by her beloved Cleopatra and an indifferent father, young Arsinoe must fight for her survival in the bloodthirsty royal court when her half-sister Berenice seizes Egypt's throne. Even as the quick-witted girl wins Berenice's favor, a new specter haunts her days --- dark dreams that have a habit of coming true. To survive, she escapes the palace for the war-torn streets of Alexandria. Meanwhile, Berenice confronts her own demons as she fights to maintain power.