South Wales, 1968, and ten-year-old Liam is grappling with some big questions. Is he adopted? Is it true he'll live to be 108 if he drinks a glass of his own pee every day? Why does everyone laugh at his dad behind his back? The more he sees of the adult world, the less he understands. Until he makes friends with Marek. Marek, the son of Polish immigrants, reveals that the Russians are planning to stage a coup and take over Wales, just like they did in Poland. Liam and Marek form the resistance and begin a desperate campaign of sabotage. Meanwhile, at home, Liam finds no matter how hard he tries, he just can't make this parents love each other. And what are the strange noises coming from the cellar in the middle of the night?