I found this story at Bloody-Disgusting.
They say it better than I ever could:
Just a few weeks after the massive Piranha attack, director David R. Ellis has cast his first four vacationers for his Shark Night 3-D. Heat Vision reports that Ellis, who directed Snakes on a Plane, the horrid Asylum and two installments of the Final Destination movies, has cast Sinqua Walls ("Savage County"), Chris Carmack (The Butterfly Effect: Revelation), Alyssa Diaz (Red Dawn) and Joel David Moore (Hatchet, Avatar) in the horror penned by Jesse Studenberg and Will Hayes. The story revolves around seven men and women who spend a weekend at a lake house in Louisiana's Gulf area. When their vacation quickly becomes a nightmare of hellish shark attacks, unheard of in freshwater lakes, they soon discover that the sharks are part of a sick, greedy plan on the part of several locals. The movie is barreling down on an early September start in Louisiana.This sounds great to me! I'm excited. It's got a bad movie director, some bad movie actors, a solid Shark Attack type story, and Joel David Moore. In 3D!! I won't be missing it.