Ellen Page (Hard Candy, X-Men: The Last Stand) tumbles through Mouth to Mouth's glassy-eyed coming-of-age tale, which, despite its indifferent Euro backdrop, plays like an all-American wine-cooler hangover. Sherry (Page) is an overtraveled, underparented teen who falls in with a multiculti homeless-outreach group emphasis on ''cult.'' Before she knows it, she's deep in the musky thrall of group founder Harry (Eric Thal). Writer-director Alison Murray picks at a hard, true hurt in this zombie melodrama of defloration, but nothing beyond that hurt really comes into focus.

