Marjorie Glatt's life hasn't been the same ever since she discovered a group of ghosts hiding in her family's laundromat. Wendell, who died young and now must wander Earth as a ghost with nothing more than a sheet for a body, soon became one of Marjorie's only friends. But when Marjorie finally gets accepted by the popular kids at school, she begins to worry that if anyone learns about her secret ghost friends, she'll be labeled as a freak who sees dead people. With Marjorie's insistence on keeping Wendell's ghost identity a secret from her new friends, Wendell begins to feel even more invisible than he already is.