Aisha's parents were killed in a car crash, and now she must move to decrepit and derelict Detroit to live with her ailing grandmother. Shortly after moving in, Aisha's grandmother's health rapidly deteriorates. With her dying breath, she summons the dark spirit that has protected their family for generations to watch over Aisha. At first it seems that this spirit, whom Aisha refers to as the Keeper, is truly doing as her grandmother asked, caring for Aisha and keeping her safe; however, it soon becomes clear that this being can only sustain itself by stealing life from others. As the Keeper begins to prey on the apartment building's other residents, Aisha and her friends must come together to destroy it - or die trying.
