3 nichten op stap gaat over drie nichten die goed overeen komen en die samen veel tijd doorbrengen. Samen maken ze veel mee zowel positieve als negatieve gebeurtenissen.
Leila Spencer was eighteen years old when she moved to the city to live on her own. On her twentieth birthday, Leila went back to her hometown near the Panorama Mountain, Canada, for a family reunion. She needs a break and steps outside and walks to the forest. A moment later, she is standing face to face with a massive wolf. Just before the wolf attacks her, she hears an unbelieveably loud howl, and the wolf who was standing before her, dissapeared into the darkness.