New Canaan News film critic Susan Granger reviews the new movie, "Avengers: Age of Ultron."

Good news: If you're looking for POW! BAM! SMASH! cartoonish action from "Avengers: Age of Ultron," you get your money's worth.

Bad news: Juggling a kaleidoscope of superheroes, as Tony Stark/Iron Man says, "It's long -- Eugene O'Neill long."

And you'd better know your "Avengers" franchise history, because this new installment begins mid-mission, as Iron Man (Robert Downey Jr.), Captain America (Chris Evans), Thor (Chris Hemsworth), Black Widow (Scarlett Johansson), Hawkeye (Jeremy Renner) and Bruce Banner/the Hulk (Mark Ruffalo) battle a battalion of H.Y.D.R.A. bad guys to capture Loki's scepter with its powerful Infinity Stone.

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What's Ultron? A sparkly computer program, concocted as a global protection system by Stark and Banner. What emerges, instead, is a rogue, red-eyed, megalomaniacal A.I. colossus -- drolly voiced by James Spader, mockingly humming Pinocchio's "No Strings" anthem as a menacing mantra -- that views humans as the world's biggest threat.

In the battle-riddled, Eastern European country of Slovenia, there's a subplot introducing "gifted" twins Pietro (Aaron Taylor-Johnson) and Wanda Maximoff (Elizabeth Olsen), who become elusive Quicksilver and mind-manipulating Scarlet Witch, respectively. Appearing midway, an angelic android, Vision (Paul Bettany), synthesizes the consciousness of Stark's devoted helpmate, J.A.R.V.I.S.

Writer/director Joss Whedon punctuates the FX-driven mayhem with an ongoing flirtation between Black Widow and Bruce Banner, along with dream-like flashbacks showing the character conflict of each squad member confronting his/her flaws and/or failings.

There are glib quips, like Hawkeye's pregnant wife's earnest, "You know, I totally support your avenging ..." and campy, irreverent humor when various Avengers try to lift Thor's hammer.

For an exhausting 2½ hours, it's repetitive sound and fury. Yes, I mean cranky Nick Fury (Samuel L. Jackson) in the S.H.I.E.L.D. carrier, along with Anthony Mackie as the Falcon. As always, there's a hint of what's to come during closing credits.

When Joss Whedon introduced this enormous Marvel assemblage to the press, he confessed, "I'm really tired of it." Was he joking? I doubt it.

On the Granger Movie Gauge of 1 to 10, "Avengers: Age of Ultron" is a spectacularly overstuffed 6 -- with more spectacle than substance.

For more about movies and entertainment news, visit www.susangranger.com.