In the clearing behind her home, six-year-old Clare Abshire encounters 36-year-old time traveler Henry DeTamble for the first time. Fourteen years later, an unexpected reunion a the library gives Henry the opportunity to meet Clare.

An optimistic, talented teen clings to a huge secret: She's homeless and living on a bus. When tragedy strikes, can she learn to accept a helping hand?

Desperate to find their missing friend, a group of girls summons the entity they believe took her -- the evil legend of Internet lore, Slender Man.