Minnesota-based director Tony Cane-Honeysett, a native Brit, sets out to makes sense of the kinky world of bondage -- the submissives, the masochists, the fetish models, the "riggers," the photographers and the profiteers -- from the photography studios of San Francisco (natch) to the BDSM dungeons of Internet commerce. Hey, it's more fun than Hollywood "torture porn." Exploring the culture as a fish out of water, Cane-Honeysett plays his mild-mannered, befuddled Britishness to the hilt -- and almost overplays it. (Of the kink practitioners he meets, he remarks, "They're all really nice and quite sensible!") Along the way he picks up two seemingly contradictory postulations about bondage: The surrendering of control can ironically lead to a mind-altering state of comfort; and the person being tied up is really the one in charge. However you respond, there are countless objectively arresting (and explicit) images throughout, and Cane-Honeysett successfully puts a human face on an often derided and misunderstood community. (Unrated.)