A Chicago cul-de-sac is about to get a new neighbour...of the demonic kind.

After moving from the city to the suburbs, Amy Foster found her place with neighbours Liz, Jess and Melissa. Snarking the elite PTA-mom crowd, the four concoct a plan for a clubhouse for themselves - a 'She Shed' in Liz's backyard, no spouses or kids allowed.

The night they christen the space with a ceremonial drink, things begin to change. What they didn't expect was for Liz's home-improvement project to release a demonic force that turns their quiet suburban enclave into something from a nightmare.

Cases of haunting activity in the neighbourhood intensify, and Liz begins to act . . . different. Even the calmest moms can't justify the strange burn marks, self-moving dolls and horrible smells that surround her.

Together, Amy, Jess, and Melissa must fight back the evil spirit to save Liz and the neighbourhood . . . before the suburbs go completely to hell.

What's a little demonic exorcism among friends?