Stop me if you've heard this one before: a gruff CIA agent who suffers from PTSD and sees re-animated corpses at random moments is ordered
to travel
to the UK and hire Stanley Kubrick
to film a fake moon landing that the American government can use in case the Apollo 11 mission turns out
to be a tragic failure, only the agent (who is played by Ron Perlman, by the way) ends up giving a suitcase full of cash
to a failed band manager and his perpetually stoned friend who looks a little bit like Stanley Kubrick, and those two idiots get robbed by the local mafia thugs right before Agent Ron Perlman realizes his mistake and threatens
to kill everyone involved — and THEN the idiotic band manager (who is played by Rupert Grint, by the way) proposes that they all head off
to film the fake moon landing with the help of a
artistic hippie commune run by an egotistical dolt who can't understand why he can't
put giant jellyfish on the moon.