The narrative structure of the film has two halves, with the first focusing on Sarah's backstory and mental issues to contextualize her, and the second featuring the characters exploring caves and encountering horrific moments with the crawlers. Jump scares are created by the crawlers appearing suddenly accompanied by screeching sounds. This film does not follow Toderov's narrative theory of beginning in equilibrium, introducing chaos, having a realization, and restoring equilibrium, as the characters are killed by the monsters before a resolution can be reached.