Starring: D.J. Cotrona, Byung-hun Lee, Adrianne Palicki, Ray Park, Bruce Willis, Dwayne Johnson Director: Jon M. Chu

    MUSCLE-BOUND and lumbering, “G.I. Joe: Retaliation” goes in a more stripped-down, no-nonsense direction than its predecessor, and the end result is a beefier but not better movie. This sequel to the cartoonish first film, 2009’s “G.I. Joe: The Rise of Cobra,” discards much of the original cast for a new set of heroes, most notably an always-game Dwayne Johnson.

    Early on, “Retaliation” establishes the fact that, in the time period since “The Rise of Cobra,” brash young upstart Duke (Channing Tatum) has advanced up the ranks to become the new leader of G.I. Joe, an elite American military force on a constant search for the terrorist organization known as Cobra.

    But after a stealthy, lethal sneak attack wipes out most of the Joes, Roadblock (Johnson) must assume command, taking under his wing Flint (D.J. Cotrona) and Lady Jaye (Adrianne Palicki). With no one to help them after realizing that the world thinks that the Joes are actually traitors — misinformation spread by a Cobra operative posing as the American president (Jonathan Pryce) — these three soldiers must stop Cobra’s mysterious plan that involves convening the planet’s most powerful leaders at a nuclear disarmament summit.

    Where “The Rise of Cobra” was directed by “The Mummy” filmmaker Stephen Sommers — known for his wholesome, somewhat dopey action movies — Jon M. Chu (“Step Up 2: The Streets,” “Justin Bieber: Never Say Never”) has taken the reins for “Retaliation.”

    It’s an interesting choice considering that Chu has made his name with movies that emphasize cutting-edge music and dance, and there are a few moments in “Retaliation” where his camera captures a balletic energy, most notably in a dizzying fight sequence across a mountain range that involves swords, zip-lines and even an avalanche.

    Unfortunately, this dark-toned sequel sets up a rather conventional arc where our heroes have lost everything and must fight against long odds to overcome an enemy with superior forces. But that stab at a grittier G.I. Joe movie fails since the three new central characters aren’t developed enough to really be that compelling. As always, Johnson is effortlessly commanding and sympathetic, his mix of swagger and charm instantly winning us over.

    But that’s not enough to form a character, and Rhett Reese and Paul Wernick’s screenplay is too busy juggling between different locations — not to mention laying out Cobra’s elaborate scheme — to bother fleshing out its participants.

    “Retaliation” was initially scheduled for a summer 2012 release but was then pushed back, the studio stating it wanted to convert the film into 3D. And while the 3D adds a certain amount of visual punch, it can’t compensate for the lack of chemistry between the central characters. To be sure, “The Rise of Cobra” was an overly jokey and tame affair, but the frat-house rapport between Channing Tatum, Marlon Wayans and Rachel Nichols at least gave it a little gusto.

    None of the new characters in “Retaliation” are as lively, and Chu’s focus on big guns and super-macho dialogue drowns the movie in testosterone. This is all the more disappointing since Chu’s earlier films had a spring in their step. Sadly, “Retaliation” mostly plays out as one more familiar shoot-’em-up, and even when Bruce Willis tries to provide a little comic relief, it mostly falls flat.

    Rather than trying to tell a captivating story, this sequel feels like a course correction meant to further the franchise and establish new rooting interests.

    “G.I. Joe: Retaliation” will be screened in Shenzhen from April 15. (SD-Agencies)