Dimension Films has released the first full-length trailer for what promises to be the Empire Strikes Back of killer fish sequels: Piranha 3-DD. Anchored by Feast director John Gulager, the fish-&-chicks frightener promises to reach new depths of depravity and violence.

Peep it:

Not that it needs it, but here’s the synopsis:

Having awoken from their spring break extravaganza at Lake Victoria, the swarm heads upstream where they look to make a meal out of Big Wet, a local water park where when it comes to fun, nobody does it wetter!

Thought they came to get wet, get loaded and get some, the staff and patrons get more than they bargained for when they must face the fiercest, most bloodthirsty piranhas yet.

Lead by the strong-willed, studious Maddy and her friends, Barry and Kyle, the trio must dive in and take on these man-eating creatures using every ounce of their being…but can they be stopped?

Piranha 3-DD stars Danielle Panabaker (The Crazies), Katrina Bowden (”30 Rock”), Christopher Lloyd (Back to the Future), Gary Busey (Predator 2) , David Hasselhoff (“Baywatch”), Ving Rhames (Pulp Fiction), Meagan Tandy (Unstoppable), Chris Zylka (Shark Night 3-D), Sierra Holmes (”Scream Queens 2″) and a bevy of nameless, top-heavy starlets.