In 2004, Shane Carruth‘s Primer made its debut at Sundance, where it became a Cause célèbre as the little film that could. Shot for $7,000, and with a 2:1 or less shooting ratio, the film was an intricate puzzle box that rewarded multiple viewings as the pieces came together in what may be the most well thought out time travel film ever made. It’s been eight years, and now, finally, Shane Carruth is following that film up with Upstream Color. And now there’s a trailer.

The film will premiere at Sundance this year, and hit theaters March 22 2013. The log line for the film is: “a man and a woman… entangled in the lifecycle of an ageless organism. Identity becomes an illusion as they struggle to assemble the loose fragments of wrecked lives.” Okay, so that tells us nothing, nor does this trailer, which is mostly impressionistic, and suggests violence and unease.

It reminds a little of Lodge Kerrigan’s work on films like Clean, Shaven, but Carruth is a unique filmmaker, and it’s hard to suggest that he’s borrowing or similar to anything else without seeing the movie. But now that we’ve seen the trailer, this is easily one of our most anticipated films of 2013, and we hope it rocks Sundance just as Primer did all those years ago.

Here’s that trailer:

Have you seen Primer?