She's a bitter, cynical, single woman who doesn't believe in love, for herself or anybody else, so instead of chucking a coin into the fountain, she pulls five of them out.
Unforeseen consequence: By reversing the flow of romantic energy, she causes the owners of the five coins to fall in love with her, all with a stalker-ish passion that's played for Pepe Le Pew laughs.
Under her spell are a magician (Jon Heder), a vapid male model (Dax Shepard), a sausage salesmen (Danny DeVito), a starving artist (Will Arnett) and the handsome hunk (Josh Duhamel).
Right away, you detect a failure of comic imagination. All guys? What are the odds?
And why not a woman? Wouldn't that be funnier?
Or maybe a dead guy, who could crawl out of a grave and stalk her as a zombie. Or a celebrity cameo. Mike Tyson worked in "The Hangover," and he'd pay big dividends here.
Even better - as long as we're on the theme of coins, how about the coin-flipping hit man that Javier Bardem played in "No Country for Old Men"? Now, that would be funny. Showing up with his shotgun and silencer, and a dozen roses.
Anyway, "Rome" is saddled with five same-ish guys, and each seems less funny than the next.
Meanwhile, we're left to wonder whether handsome hunk Duhamel is actually in love with her, or merely a victim of the coin thing.
It's not much of a mystery, or a movie.