"Everybody knows a sequel is never quite as good," the Muppets themselves admit early on during their latest big-screen adventure.
They're quite correct.
There is plenty of brash, Mel Brooks-style humour here but the plotting becomes increasingly soporific and repetitive. Kermit the frog has been thrown in a Siberian gulag.
His arch-criminal lookalike Constantine, in cahoots with oleaginous music manager Dominic Badguy (Ricky Gervais), is taking the rest of the furry gonks on an extended world tour.
The tour is just a pretext for Badguy and Constantine to rob museums and banks – and for the film-makers to include as many songs, dances, in-jokes, pointless celebrity cameos and inane puns as possible.