“Old Guy” is billed as an action movie but it is actually more of a fantasy film. It imagines a world in which an aging hit man kills his targets without consequence before retreating to nightclubs where scads of beautiful young women compete to accompany him home.

Presumably Danny Dolinski (Christoph Waltz) has been enjoying such a lifestyle for decades. But when the movie begins, his bosses consider his contract killing career to be approaching its natural conclusion because of the joint pain afflicting his trigger finger. Dolinski would prefer to stay in the game, but Opal, the director of The Company (Ann Akinjirin) insists that he serve as a mentor to Wihlborg (Cooper Hoffman), a promising, and youthful, assassin.

So begins a familiar story of the veteran and the rookie, updated to include snide observations about Gen-Z style trends. Between this odd couple, Wihlborg is designed as sympathetic — he is given an arbitrary back story in foster care — but Dolinski is clearly meant as our hero, joined by a damsel in a low-cut dress (Lucy Liu). The director Simon West strains to frame Dolinski as a witty cad whose embittered demeanor (and murderous vocation) belie a sturdy moral code.

Beyond the stale plot and groaners that make up the dialogue, “Old Guy” suffers from haphazard pacing, as if every third scene was cut out in postproduction. Watching, one wonders who this movie is for — even within the target demographic stated in the title.

Old Guy
Rated R for guys shooting guns. Running time: 1 hour 44 minutes. In theaters and available to rent or buy on most major platforms.