While on her bachelorette party getaway, Casey, the bride to be, gets a seemingly harmless bite from an unknown insect. After returning home with cold feet, Casey tries to call off her wedding but before she’s able to, she starts exhibiting insect like traits. Between her physical transformation and her wedding anxiety, Casey succumbs to her new instincts and begins creating a hive that not only houses her translucent eggs, but feeds on the flesh of others. As her transformation becomes complete, Casey discovers that everything can change with a single bite.

After almost drowning in a lake, Madison finds herself bound to a life of fear. Unable to describe what happened to her during the moments she was underwater, she begins to develop hydrophobia: an abnormal fear of water. Crippled by her post trauma, Madison attempts to shut out the world but her fear intensifies and she is faced with the vision of a dark figure that haunts her day and night. After watching her struggle for one year with the phobia and visions, Madison’s four friends attempt an unconventional intervention in which they accidentally open a floodgate to a dark place where none of them are safe. As Madison and her friends dive deeper into the dark history of this figure that haunts them, it reaches out and begins dragging them to a horrifying place that they can never come back from.