Journey’s “Don’t Stop Believin’,” the film’s climactic final number, has the misfortune of having grown tiresome in recent years between its inclusion on “Glee” and “The Sopranos” finale.

[...] the club has lost some of its cache, to the distress of its owner (Alec Baldwin in long hair and a leather vest) and his right-hand man (Russell Brand, being Russell Brand), so they’re hoping a performance from rock god Stacee Jaxx (Tom Cruise, easily the best part of the film) will keep them alive.

With a bandana tied around his long, wild tresses, aviator sunglasses and fur coat over his bare, tatted chest, Cruise is clearly aping Guns N’ Roses lead singer Axl Rose.

Unfortunately, this film version (with a script from Chris D’Arienzo, who created the stage show, Allan Loeb and Justin Theroux) also feels the need to cram in a subplot about the self-righteous, uptight wife (Catherine Zeta-Jones) of L.A.’s mayor (Bryan Cranston), who’s on a crusade to clean up the Strip.

Even though the “Chicago” star’s intentionally rigid performance of Pat Benatar’s “Hit Me With Your Best Shot” is good for a laugh, the whole story thread seems like a feeble attempt at injecting tension.

“Rock of Ages,” a New Line Cinema release, is rated PG-13 for sexual content, suggestive dancing, some heavy drinking and language.