In the early 80s, Bobby Cassidy and Joey Miller were inseparable; childhood friends and fledgling business associates. Now, both are depressed and lonely, and they haven't spoken to each other in more than 10 years. A bizarre opportunity to honor the memory of someone close to both of them presents itself, if only they can forgive and forget. With the help of the deluded Max Mojo and the faithful Hamish May, can they pull off the impossible, and reunite the legendary Ayrshire band, The Miraculous Vespas, for a one-off Music Festival—The Big Bang—on a remote, uninhabited Scottish island? Absurdly funny, deeply moving and utterly human, this is an unforgettable finale to the Disco Days trilogy—a modern classic pumped full of music and middle-aged madness, written from the heart and pen of one of Scotland’s finest new voices.