1967. Hungover and at each other’s throats, John, George and Ringo must convince Billy Shears, a sheepish rural lookalike, to join their band after Paul dies during a drug filled musical retreat.

Gemma receives a mysterious invitation to the birthday party of an enigmatic millionaire, Jeremy. She must pass herself off as Jeremy's old friend and mingle with his glittering guests. But Gemma cannot help but wonder who Jeremy is and why on earth he has tasked her with such a peculiar job - there's something more to him than meets the eye.