The Spirit of the Staircase (2014)

Ura, a 17 girl, gets trapped in a forest with her four best female friends. They simply cannot find the way back. Ira, a new girl, shows up and helps them to reach a safe house in the middle of the forest. Four adults live in the house. They got lost a year ago and found the house when they were in the point of starving. Once in the house, Ira and Ura are the only ones that dare to leave the house and explore the forest. Ura feels a strange attraction for Ira, who keeps a forgotten secret about Ura.