In the Diane Keaton funny “Mack & Rita,” the 30-year-old Mack

In the Diane Keaton funny “Mack & Rita,” the 30-year-old Mack (Elizabeth Lail) has constantly seemed like an old spirit. Recently, tuckered out by the demands of being a social-media influencer and hurt by not production headway on her second unique, she simply desires a rest. At her bestie Carla’s bachelorette jaunt to Hand Springtimes, Calif., Mack repairs to a retrofitted sun tanning bed advertised by a appearing charlatan called Luka (Simon Rex) as a life-regression capsule.

She arises 40 years older, played by Keaton. (Smarter remains to be seen.) Keaton brings her love for split couture and present for goofiness to the recently arrived Auntie Rita.

Lessons will be learned, and there’s lots of slapstick. Although no connection to Buster, this Keaton has grown progressively ready all manner of pratfall. Cause the Pilates contraption! Put the magic mushroom tea!

Guided with some unexpected defeats by Katie Aselton, the funny catches a little bit of the esprit de sweethearts of HBO’s “Unconfident,” but obtains too giddily from the Nancy Meyers rom-com brochure of high end homes.

Keaton’s zaniness is balanced by Taylour Paige’s credibility as Carla, whose relationship is nearly unflappable, and Dustin Milligan as Mack’s next-door neighbor, dog-sitter and presumptive love rate of passion, Jack. The funny delights in teasing Rita and Jack’s chemistry, as do the wine-tippling friends of Carla’s mom, Sharon (Loretta Devine, signed up with by Wendie Malick, Lois Smith and Amy Hillside). The enjoyment the klatch absorb each various other and the advice they offer Rita recommends that the best connect in between young people and expanding grey — besides self-acceptance — may be enduring relationships.