Time travel has made the Edge of Time a dangerous place.

To protect the Edge of Time from the disastrous alterations of time travelers, the Aeon Legion seeks the greatest soldiers and warriors from the most bloody, war-torn eras in history. Those they deem worthy gain a chance to compete in the toughest training program ever designed.

Terra Mason, a plain eighteen-year-old girl from the modern United States, has an impressive stubborn streak. Her persistence and bravery gains the notice and sponsorship of one of the Aeon Legion's greatest heroines. Now Terra must turn that stubbornness into determination if she is to contend with history's finest soldiers and somehow pass the Aeon Legion's final test, the mysterious Labyrinth. She will not quit. Terra will prove that even someone as average as her can still be a heroine.

Hanns Speer is polite, good-natured, charming, a genius inventor of a time travel machine, and a dedicated member of the Nazi Party. Yet he cannot understand why people from the future regard him and his fellow Nazis as monsters. Now he must use his charisma and cunning to challenge the seemingly invincible Aeon Legion and its monopoly on time travel. He will not quit. Hanns will steal history itself if he has to, mistakenly believing it will prove him to be a hero.