Melissa and Ben have a picture-perfect new marriage: true love, good communication, supportive family, and a beautiful first apartment together in a safe neighborhood where they hope to start a family. It looks like nothing could go wrong for them...until everything does. At first, the new building manager Carla is friendly, accommodating, and handles any problems in their suite promptly. But then come the problems: harassing emails, unexpected apartment problems, and a sudden and alarming decline in Melissa's health. Meanwhile, Carla seems to have taken an unusual interest in the both of them--especially Ben. And the worst part is that he seems to be returning that interest. When Melissa suspects he's returned to his cheating ways, she flees to her parents' home, leaving Ben alone to uncover the true horror of the situation. In the end, the two won't just be fighting for their marriage, but their survival.