Sometimes, the only way to escape hell is to walk straight in.
A healthy patient dies without explanation. A tour bus crashes with no survivors. Odd, deadly accidents. Strange diseases. And only a single group of teens knows why it's happening.
It had been an ordinary weekend night. Flower, Connor, Almira, and Ricky hadn't meant to open a portal to Hell. But now an army of grim reapers with a hatred of all humankind has been unleashed, "shadows" that immediately embark on a worldwide killing spree.
Now, it's up to Flower and her friends to save the human race from total annihilation. Hooking up, breaking up, falling in love, and learning the difference between life and death, all while cramming for midterms, is hard enough.
Pursued by a sinister organization that mistakenly believes the group has supernatural powers, the only way to bring order back to a broken planet is for the friends to return to the portal. Back into a world of screaming darkness, back to the dominion of death. . .
Will their wits, their unexpected courage, and their bonds with one another be enough to save the world and save themselves?