Going on a journey to Britain, Kermit the Frog and Fozzie, tow young smart reporters, who have a mission to solve the theft of a valuable necklace, the thing that challenges them, as Kermit falls in love with the robber.
During their late-70s heyday the Muppets won huge TV audiences with their corny puns and showbiz in-jokes, but stretched to feature length the formula loses some of its snap.
That first film with the muppet crew had to be a success; this time it was more difficult. Nonetheless, the caper plot that Henson and company worked out manages to hold adult interest for quite a while.
We don't care about some dumb diamond the size of a baseball, and as Muppet fans we're probably also indifferent to Henson's ambition to satirize old movie genres.