When their car breaks down, a couple on the run headed southbound for a fresh start in the Sunshine State break into a nearby house looking for a new set of wheels. What they find instead is a dark secret, and a sweet-as-pie pair of homeowners who will do anything to keep it from getting out.
After carefree teenager Jay sleeps with her new boyfriend, Hugh, for the first time, she learns that she is the latest recipient of a fatal curse that is passed from victim to victim via sexual intercourse. Death, Jay learns, will creep inexorably toward her as either a friend or a stranger. Jay's friends don't believe her seemingly paranoid ravings, until they too begin to see the phantom assassins and band together to help her flee or defend herself.
When Elliot, a brash 23-year-old living carefree in New York City, meets the sensible Mia and receives a damning diagnosis all in the same week, his world is turned completely upside down. But as their love blossoms amidst the chaos of his treatment, they discover that Elliot's illness is not the real test of their relationship – it's everything else.
We always knew they were coming back. Using recovered alien technology, the nations of Earth have collaborated on an immense defense program to protect the planet. But nothing can prepare us for the aliens’ advanced and unprecedented force. Only the ingenuity of a few brave men and women can bring our world back from the brink of extinction.