Paris, 2064: Music historian Anna Marchand is accidentally transported back in time to the year 1964.
When the initial shock has subsided, she heads for London in search of the legendary 'Jim Jam Sessions', a rumoured set of unofficial recordings from the era.
Meanwhile her friend Alex, whose makeshift time machine has caused her to disappear, searches frantically for a way to find her and bring her back to her own time.
Along the way we meet a variety of characters, including the piratical Morgan Windrush, who takes Anna literally under his wings; Evan Ross, a self-styled 'tempus fugitive' with a taste for electric guitar riffs; Kate Tyler, a professional sceptic who becomes Anna's best friend and confidante; Rory Spriggs, Anna's landlady with a secret past, and many others.
A rich, fast-moving tale of time and space and rock'n'roll, love and friendship, laughter and tragic loss, interwoven with a flavour of the Sixties.