Secluded in 6x9 cells year after year with little or no human contact, three individuals in prisons across the United States experience the tedium, loneliness and psychological despair of long-term solitary confinement.

Over time, they begin to construct elaborate fantasy worlds to escape their daily reality.

Through vivid, hand-drawn animation, ‘Inside, The Valley Sings’ tells their remarkable real-life stories and paints an unforgettable portrait of the power of the human imagination.