August has bipolar disorder. When left alone at his parents' house, he discovers that ghosts are coming through a multidimensional portal in the attic. He gets along with them just fine until his estranged sister breaks in, forcing him to come to terms with his manic episode.

Suspicious that her colleague is responsible for a series of mysterious patient deaths, a nurse risks her own life to uncover the truth.

Mallory, tormented by a fear of being insignificant, accompanies her playwright boyfriend Sam to a retreat on the coast of Maine. She learns that he once took his glamorous ex-girlfriend there. She is overcome by an obsessive curiosity.