Paul McCartney is walking down the street with his daughter Stella and her friend, Anna, when they are approached by a woman dressed in a thousand dollar suit, and her butler, who is armed with a gun. They kidnap Paul, Stella, and Anna and lock them in a massive World War II era concrete bunker, where the butler serves them coffee and the woman conscripts Paul into writing a rock opera. Gwen and Roger June are aristocratic friends of Paul and Anna, who have reason to carry guns, and they don't like their friends being kidnapped, even when the kidnappers are benevolent and the ransom demand is to produce the greatest collection of pop songs ever written. The hunt is on.