Nick is committed to his struggling jazz quartet despite the apathy of his sister, drummer Lauren, trombonist Horace and the philandering Jason. Then a tramp, Homeless Pete, shows them a lift which is actually a time machine, whisking them back to 1926 where they attract - largely unwanted - attention until aristocratic twins Victoria and Ralph book them to play at their birthday party. More concerned with returning home Nick enlists the aid of crazed boffin John Logie Baird, who accuses him of being a spy and imprisons him though he escapes to join the others at the ...

While the rest of the band enjoy living it up in their new environs at Victoria and Ralph's house, Nick desperately tries to work out a way back home. He is invited on a spiritual retreat to help with his wellbeing, but it soon becomes apparent that all is not what it seems. Meanwhile, Jason is all loved up with Victoria, but Lauren begins to tire of Ralph's irritating advances.

The band enjoy a game of murder mystery while at Victoria's country house for the weekend. But when Curtis tracks them down to the house, he has his mind on one and one thing only: revenge.