After the tragic death of her husband, a mother moves her teenage son and daughter to the idyllic town of Purity Falls only to find the rift with her son deepen when he becomes entrapped in the neighborhood maven's nefarious home business.

A woman agrees to buy alcohol for a group of teens and offers them her basement to party in. But her hospitality soon turns into obsession — and terror.

A bit of an outsider struggling to fit into her new surroundings, Nancy and her pals set out to solve a mystery, make new friends, and establish their place in the community.