A pro-Gingrich Super PAC released a trailer late last night for a project former Mass. Gov. Mitt Romney cannot be pleased about: a half-hour documentary about Romney's time running Bain Capital, a venture company that bankrupted nearly a quarter of the businesses it bought-up.

Produced by a former top Romney strategist, the film "When Mitt Romney Came to Town" focuses on people turned out of their jobs at four of the many companies Bain Capital essentially looted, tapping into the popular discontentment with Wall Street to label Romney a "corporate raider."

The pro-Gingrich PAC Winning Our Future placed a top-dollar bid on the 27-minute film after pro-Romney PACs essentially destroyed Gingrich's chances in Iowa with a flood of negative advertising that blanketed the airwaves.

The companies -- laundry equipment maker UniMac, electronics maker DDI, toy store chain KayBee Toys and office supplier AmPad -- were all purchased by Bain and liquidated, "killing jobs for big financial rewards," the film explains.

"It’s puzzling to see Speaker Gingrich and his supporters continue their attacks on free enterprise," the Romney campaign responded on Sunday. "This is the type of criticism we've come to expect from President Obama and his left-wing allies at Moveon.org. Unlike President Obama and Speaker Gingrich, Mitt Romney spent his career in business and knows what it will take to turn around our nation’s bad economy."

Winning Our Future PAC told Bloomberg News that it plans to run the film on South Carolina airwaves, but a date and time has not yet been announced.

The video below is from the pro-Gingrich Winning Our Future PAC, published Sunday, Jan. 8, 2012.