This gender-flipped reboot of the 1984 comedy hit aces the Bechdel test (Are there women in the story with their own concerns?) but fails in almost every other respect. The spunky, likable heroines (Melissa McCarthy, Kristin Wiig, Leslie Jones, Kate McKinnon) work some funny riffs into an unimaginative script by Katie Dippold and director Paul Feig (Bridesmaids), who have opted for a beat-by-beat retread over an actual sequel. The story takes place in an alternate universe from the original Ghostbusters that never quite gels: a shiny, spotless simulacrum of New York City where everyone is a goof and hardly anyone believes in ghosts or the busters thereof, even though the paranormal battles occur in public and on camera. This might have worked if the 1984 film were less well remembered, but it looms large over this production, which does little to distinguish itself. With Chris Hemsworth, Neil Casey, and halfhearted cameos by Bill Murray, Dan Aykroyd, and Sigourney Weaver.