Dysfunction Junction is somewhere in the career-criminal packed suburbs of northern New Jersey in Dan Levy and Rachel Sennott’s “Big Mistakes,” a harder-edged, over-plotted way of covering the same ground as “Schitt’s Creek,” with little of the charm.

Bingeing this eight episode Netflix offering plays up the darkly funny “Oh no they DIDN’T” bits of business and outlandish or just plain grim plot turns. And bingeing makes nakedly plain the fact that “Mistakes” shoots its wad in the first two episodes and fiddles and faddles through the rest trying to top that.

The quarrelsome siblings in this family are Morgan (Taylor Ortega) and her adopted older brother Nicky (Levy) — “Nicholas” to his church congregation. Levy deciding that a gay Canadian Jew in the Protestant clergy is a joke doesn’t pay off nearly as well as he hoped.

Morgan is a school teacher with impulse control issues and committment problems with her “boring” significant other since high school (17 years ago), Max (Jack Innanen). Nicky has a lover (Jacob Gutierrez) and a congregation he won’t come out to no matter what century this is.

Divorced Mom (the indomitable Laurie Metcalf) inherited the family hardware store and is running for mayor against a cutthroat Jimmy Johns franchisee (Darren Goldstein), but not to worry — youngest, stablest and smartest daughter Natalie (Abby Quinn) is running her campaign.

The “Big Mistakes” begin when this stressed-but-maintaining-an-even-strain clan is tested by the death of Nonna (Judith Roberts), their matriarch. That’s what sends Mom over the edge ordering the kids to fetch granny’s “dying wish,” a necklace to be buried in.

And that’s what puts fearful, keeping-up-appearances figure of “some standing” in the community, Pastor Nicholas and loose cannon Morgan in a cheap gift shop where one shoplifted necklace later, a Turkish clerk (Boran Kuzum) is armed and on their case, kidnapping the siblings for a face-off with a murderous Russian mobster (Mark Ivanir).

Nicky and Morgan “owe” him a necklace, even though it’s been buried with grandma. They owe him “a favor” beyond that. As the favors pile up and the Brazilian and the Italian mob get involved, the hapless duo realizes they’re mixed up in the drug trade and cattle smuggling and in way over their heads.

“I just go where the powder blows, as they say” isn’t convincing anybody.

Mom’s campaign turns ugly and personal. Mom and Morgan’s partner’s mom (Elizabeth Perkins) try to intervene in a relationship he is the only one who wants to save — therapy, role-playing, the works.

And Nicky’s dreams of fleeing it all for a six month cruise with Tareq (Gutierrez) on a sabatical minister’s salary seem like dust — or powder — in the wind.

There are enough grace notes in this — Pastor Nicky’s homily-honed storyelling and mediation and lie-on-the-fly skills can be sweet and/or funny.

But Levy struggles to give nuances to his character as the only emotions that register are outrage, panic and desperation. Ortega (of some series called “Welcome to Flatch”) has even fewer notes to hit.

The brash and outrageous co-creator Sennott (:Shiva Baby”) is sorely missed on screen, not off.

And Metcalf lets us see the off-camera stage directions she must have been getting before EVERY SINGLE TAKE.

“Laurie, your EYES didn’t bug out enough last time. Can we go again?”

The first villain we meet, played by Kuzum, is the most interesting and frightening. The rest are a motley crew ranging from rarely amusing to utterly miscast.

“Weeds” alumna Perkins stands out, with Quinn and Ortega making strong impressions and Innanen annoying the hell out of us in ways only Giovanni Ribisi could match.

Completists will stick with “Big Mistakes” even through episodes where the mistakes get bigger, just less funny. But for viewers with less time on their hands, here’s a tip. Watch the first two and laugh, and the third to get a whiff of how it slacks off, and move on.

Rating: R, violence, drug abuse, profanity

Cast: Dan Levy, Taylor Ortega, Laurie Metcalf, Abby Quinn, Jack Innanen, Boran Kuzum, Jacob Gutierez, Mark Ivanir, Darren Goldstein and Elizabeth Perkins

Credits: Created by Dan Levy and Rachel Sennott. A Netflix release.

Running time: Eight episodes @ :31 minutes each