At last we have an idea about what Larry David's mysterious new film for HBO is about -- and not surprisingly, it sounds a lot like 'Curb Your Enthusiasm.'

HBO officially announced that it was picking up the yet-to-be-titled film earlier this week, after Fox Searchlight passed on it for theatrical release. Although HBO's announcement at the Television Critics' Association event emphasized that the movie is "not a 'Curb'" project, the Los Angeles Times has unearthed a 40-page copy of the storyline.

Want to know what it is? Okay, proceed from here:

The movie, which will almost certainly be partially improvised like 'Curb,' stars David as a marketing exec who is trying to push a new electric car. But the exec, named Lenny, gets into a disagreement with Haney, the car's inventor, over the name -- the "Howard," named after the character Howard Roark from conservative idol Ayn Rand's novel 'The Fountainhead.'

In any case, Lenny washes his hands of the project and gives back his stake -- after which the car becomes a massive success, making Haney a wealthy man and leaving poor Lenny with nothing. Losing his house, his job and his wife, Lenny retreats to Martha's Vineyard and takes a low-paying job as the helper to an old woman -- until Haney shows up on the island one day, leading Lenny to plot his revenge.

The Times says that all this happens pretty early in the proceedings, so there's much more to the story that we still don't know. But it does sound like a mega-episode of 'Curb' and David's character -- even though he's got a different name, job and life -- reportedly bears a strong resemblance to the facsimile of himself that David plays on the series.

David has collaborated on the script with several writers from the 'Curb' stable, while Greg Mottola ('Superbad') will direct and Jon Hamm ('Mad Men') will co-star.

There's no word yet on when this will premiere, but it will arrive before a new season of 'Curb' does -- so if anything, it will be the next best thing to that.