Natalie Dormer enters the “suicide forest” to find her twin sister despite being told to “stay on the path” in the first trailer for “The Forest”, TheWrap reports.

In the trailer, Sara (Dormer) feels that something is wrong with her twin sister. Finding out that she went to Japan’s Aokigahara Forest, a place where “lost people go to commit suicide,” she decides to look for her, losing her mind and herself along the way.

She starts to see things and becomes paranoid, which her companion Aiden (Taylor Kinney) had warned her about when he said he would escort her into the forest.

Starring Dormer, Kinney, Eoin Macken and Yukiyoshi Ozawa, the horror film was directed by Jason Zada and written by Sarah Cornwell, Nick Antosca and David S. Goyer.

The Focus Features film set for Jan. 8 release.