To escape her unhappy life in a remote part of Texas, nine-year-old Jeliza-Rose dreams up an elaborate fantasy world. But the reality of having junkie parents - played by Jeff Bridges (The Big Lebowski) and Jennifer Tilly (Bound) - and the influence of her eccentric neighbours begins to encroach, turning her daydreams ever darker.

A young peasant, with no interest in adventure or fortune, is mistaken as the kingdom's only hope when a horrible monster threatens the countryside.

Toby (Adam Driver) enters a world of time jumping fantasy when he meets "Don Quixote" (Jonathan Pryce), a delusional Spanish cobbler who believes Toby to be Sancho Panza. They embark on an epic adventure where dreams and reality intertwine.