Dani and Anna have it all. A beautiful house, stable (if aggravating) jobs, and, best of all, Bert! This quirky, adorable little kitty brings them a sense of purpose, but their simple lives are shattered by sudden, terrifying disturbances: an invasion of slugs, moving objects, malevolent faces glaring from the windows, and an ice-cold dread enveloping their home. With Bert in a frenzy and the disruption worsening, Dani and Anna are faced with a force far beyond any they could imagine…a malicious entity looking to take everything and everyone they hold dear…