“The Hummingbird Project,” a fictional yarn set in 2011 and 2012, concerns a pair of Wall Street traders who implement a plan to lay underground fiber optic cable halfway across America, thereby gaining a few milliseconds’ advantage in stock information over their fierce competitor and former boss.

I can hear you ticking off the reasons you’re unlikely to take a chance on writer-director Kim Nguyen’s feature. Fiber optics, for one. Are fiber optics innately cinematic? On its face, would this film even appeal to fiber optics salespeople?

Surprise! It works. The actors play it just straight enough to make it feel like a fact-based drama (though it isn’t) with a few darkly comic details. Dealing with a narrow world of dubious surface appeal, the Montreal-based filmmaker’s third English-language feature is small, but sure. It realizes its fable of ambition, persuasion and learning to smell the roses instead of counting the milliseconds.

The casting has a lot to do with its success. the traders are portrayed by Jesse Eisenberg and Alexander Skarsgard, in complementary shades of sweaty obsession. The adversary is played by Salma Hayek.

Vincent (Eisenberg) and Anton (Skarsgard, transformed via baldpate latex) are cousins, working for a stock trading outfit run by Eva Torres (Hayek, decked out in a silver-grey wig and serious financial nerd eyewear). The cousins hatch a plan to lay fiber optic cable from Kansas to New Jersey on the down-low, running it underneath everything from Amish farmland to federal parkland.

The idea is to shave a few precious milliseconds off stock transactions, thereby making hundreds of millions in the time it takes a hummingbird to flap its wings. (Hence the title.) Early on, when the cousins resign from Eva’s firm, she knows they’re up to something. The rest of the movie chronicles that something, and Eva’s countermoves.

As a screenwriter, Nguyen knows how technical he needs to get with this stuff without losing a general audience (and financial/technological dolts like me) in the weeds. Now and then someone will say, “Can you run it by me one more time, please?” for our benefit. But the story’s essentially a simple game of cat and mouse. Part of the story’s satisfaction rests on characters who are in over their heads, winging it with other people’s millions in the hopes of making those millions multiply.

Eisenberg has a sharp sense of pacing, as always, and never asks for cheap sympathy. Hayek finesses Eva just so, avoiding a heavy hand, and the smaller but substantial supporting roles have been cast well, notably Michael Mando (as Vinny’s all-purpose project manager, increasingly fed up) and Sarah Goldberg (as Anton’s wife, Mascha, who isn’t sure what her husband’s getting into).

“The Hummingbird Project” lays in its moral a little too neatly near the end, like a straight line of extraneous underground cable. Still, It moves well, looks good and tells its peculiar story with confidence.