Bickering frenemies Meg and Shar are doing some serious damage at a midnight sample sale, arguing over a pair of shoes--with fatal consequences. One innocent bystander later, the girls are suddenly at the mercy of Hades--the god of the Underworld--himself. To make them atone for what they've done, Hades forces the teens to become special-assignment Sirens, luring to the Underworld any individual whose unholy contract is up. Then there's the matter of the fine print in their own contracts... Original.