Becky's family has moved right next door to the creepy, abandoned McNally house. Rumors fly around school about the ghosts and monsters that live there, and Becky isn't sure what to believe. Even her mischievous dog, Bear, stays away from it.

When Becky starts hearing mysterious howls coming from next door, paired with an awful smell, she starts to wonder if the rumors might be true. Snarls and glowing eyes confirm it--something is over there, and it's not happy. Worse, Becky's parents are blaming Bear for all the unexplained damage around their property. Can Becky stop this creature before it's too late?