Plot

A newlywed couple finds their lake-country honeymoon descend into chaos after Paul finds Bea wandering and disoriented in the middle of the night.

Young newlyweds Paul and Bea travel to remote lake country for their honeymoon. Shortly after arriving, Paul finds Bea wandering and disoriented in the middle of the night. As she becomes more distant and her behavior increasingly peculiar, Paul begins to suspect something more sinister than sleepwalking took place in the woods.—Official

Newlyweds Paul and Bea want to spend their honeymoon at a cabin in the woods. But the lovely romantic moments quickly disappear when strange events start to unfold. Mysterious and frightening events that seem destined to tear this couple apart.—Rodrigo Amaro

The newlywed Bea and Paul travel to a remote cottage in the woods that belongs to her family for their honeymoon. They are happy and feeling deep love for each other. They decide to have lunch at a rustic restaurant where Bea meets her childhood friend Will, who owns the restaurant and has a strange behavior. He tells that he got married to Annie and asks them to leave since the restaurant is closed. During the night, the house searched by a light and soon Bea vanishes. Paul finds her naked and wandering in the woods and she claims that she is sleepwalker. Paul suspects that she had encountered Will while Bea changes her behavior. What might have happen to Bea?—Claudio Carvalho, Rio de Janeiro, Brazil

Bea (Rose Leslie) and Paul (Harry Treadaway) are newly married and off to have a romantic honeymoon in a rustic cabin set in a secluded forest. During their stay there, they go to a small restaurant whose owner initially acts hostile and asks them to leave, but later calms down, realizing he was Bea's childhood friend, Will. Will's wife then comes in, acting strangely and saying they need to get away. Afterwards, everything goes normally until their wedded bliss is cut short when Bea goes missing. Paul finds her naked and disoriented in the woods with no evidence as to how she got there or why she was there in the first place. He takes her back to the cabin, where she claims she was sleepwalking due to stress, and tells him to make nothing of it.

As time passes, Bea's behavior becomes increasingly distant and strange. At first, Paul blames Bea's strange behaviour on some encounter with Will, but soon he realizes there's more going on. One night as Paul is lying awake, he sees some bright lights through the windows, but when he goes to investigate he finds nothing. As Paul sees his wife's behavior becoming more erratic he finds unique marks on Bea's inner thighs which she passes off as mosquito bites. Some time later during an argument, Bea locks herself in the bathroom, and when Paul breaks in he finds her repeatedly stabbing herself in the genitals. Paul then ties her to the bed and she asks him to "take it out of her". Paul puts his hand into her vagina and takes out a large worm-like creature. Bea later explains that the night she disappeared into the woods, she saw the same lights Paul had seen and couldn't help walking towards them. She then saw some silhouettes, which apparently impregnated her with the creature. Bea says that she is herself, but they're taking away what's left of her. She says she must protect Paul because they are going to "dispose of him". Bea then knocks Paul out, takes him into the middle of the lake on a boat, ties an anchor to his feet, and throws him to his death while believing that she is protecting him by "hiding" him under the water.

Bea is later shown to be deteriorating, her skin becoming white and flaky. She then meets Will's wife, and they walk away into the lights. The film finishes with Bea saying "Before I was alone, but now I'm not."