A group of friends set out to investigate local legends surrounding the Slender Man, documenting their search with handheld cameras as curiosity slowly gives way to paranoia and fear. As strange occurrences escalate and the line between myth and reality begins to blur, the footage captures their unraveling descent into obsession. Presented in found-footage style, the film leans on minimal exposition and escalating dread to suggest an unseen presence stalking the group.