After its victory over Leonidas' 300, the Persian Army under the command of Xerxes marches towards the major Greek city-states. The Democratic city of Athens, first on the path of Xerxes' army, bases its strength on its fleet, led by admiral Themistocles. Themistocles is forced to an unwilling alliance with the traditional rival of Athens, oligarchic Sparta whose might lies with its superior infantry troops. But Xerxes still reigns supreme in numbers over sea and land.

Lawrence Wetherhold is miserable and misanthropic: he's a widower, a pompous professor at Carnegie Mellon, an indifferent father to a college student and a high-school senior, and the reluctant brother of a ne'er-do-well who's come to town. A seizure and a fall send Lawrence to the emergency room where the physician, a former student of his, ends up going on a date with him. His daughter, Vanessa, lonely and friendless, who's been bonding with his brother, tries to sabotage dad and the doctor's...