Set in a world where puppets and humans live side-by-side (so, basically like The Muppets), a former puppet detective turned private eye investigates a murder case involving the stars of a popular 1980s puppet TV show.
What I have seen of the script shows it to have a slightly meaner edge than Roger Rabbit, but also less of the wit and imagination, it has a lot of potential but it will come down to the director successfully recreating the film noir aesthetic.
All of this is fairly irrelevant to me if they cast Katherine Heigl, a screen presence that I simply cannot stand, and does not say "classic noir beauty" or "femme fatale" in the slightest. She is the face of the modern romantic comedy and therefore she is the human embodiment of the sensation you get from acid reflux.
The Happytime Murders will be produced by Jim Henson Co., directed by Brian Henson with a screenplay by Kung Fu Panda 2's Todd Berger. Hopefully Heigl can resist accusing her felt co-stars of perpetuating sexist ideals in future press engagements.