When a musician and her husband move to a remote house in Wales, the music they make disturbs local ancient folk magic, bringing a nameless child to their door who is intent on infiltrating their lives.
A group of violent and misguided young offenders are experimented on using brutal AI technology at a sinister institute.
Was it a cult? A charismatic bandleader convinces four generations of Midlands factory workers to dedicate their lives, and their children’s, to his obsession with leading the world’s best marching band, whatever the cost.