Maggie, a single mom who is struggling to make ends meet, is living with her teenage daughter in a rundown motel and facing impending eviction. She works at a storage facility where she and her daughter are caught in the middle of a shady deal gone wrong between her boss and two criminals resulting in the murder of her boss. The mom and daughter must retreat into the facility's maze of corridors as they are pursued by the two criminals, who are in search of stolen diamonds which are stashed somewhere inside of the facility. In order to survive and protect her daughter, Maggie must utilize her intimate knowledge of the facility to remain a step ahead of her dangerous perpetrators.