More like the J.J. Abrams-helmed “Star Wars” sequels than anything George Lucas made, “Kalki 2898 AD” takes place in a godless world with scarce resources, low birth rates, and no heroes except the self-interested. Supreme Yaskin (Kamal Haasan), a Palpatinian cyborg despot, rules the pseudo-Utopian Complex by proxy, through baby-faced Commander Manas (Saswata Chatterjee), an inexhaustible battalion of storm troopers, and a ton of amoral, bounty-seeking scavengers. Headlining star Prabhas plays one such scavenger, Bhairava, a happy-go-lucky mooch who owes money, I mean credits, all around town. 

Eventually, Bhairava stumbles into SUM-80 (Deepika Padukone), later renamed Sumathi, a pregnant refugee from the Complex’s “The Handmaid’s Tale”-esque Project K laboratory complex. Bhairava will do anything to live in the Matrix-like Complex, and Sumathi has a big bounty on her head. She’s also protected by Ashwatthama, played by a seven-foot tall Amitabh Bachchan, who’s empowered by Herculean strength and on a centuries-old mission to protect Sumathi and her child, who may or may not be the messiah that will save the world from eternal darkness. Everybody chases after Sumathi, who, with the help of a few sympathetic strangers, crosses a vast wasteland to the Zion-like sanctuary of Shambala, guarded by the saintly Mariam (Shobhana) and an army of techno-spear-carrying soldiers.

As you might imagine, the first half of “Kalki 2898 AD” laboriously sets up what the back half nudges home. By that point, the movie’s pan-Indian ensemble cast has slotted into their second-hand roles and is no longer teasing but rather declaring their story’s grandeur. It’s still thrilling to see a pantheon of mega-watt Indian stars, including the often-included but rarely so-well-venerated Bachchan, represented as the icons that their devoted fans already know them to be. 

“Kalki 2898 AD” eventually finds its rhythm and some urgency after a few too many pseudo-comic lulls once Sumathi escapes the Complex, sliding down and clambering up Death Star-like sluices and tunnels and then escaping through an infernal trash compactor. When SUM-80 walks in slow-motion through a corridor of flamethrowers, we see an insubstantial character struggling to outdistance a star performer. When she emerges as Sumathi, a name given to her by two selfless conspirators, it’s mostly because the story has become focused enough to transcend the actors’ campy gestures. Several familiar and even predictable story beats are hit along the way and the movie eventually stops exactly where you might expect the first entry in a wannabe franchise to end up. But what starts as a crowded blockbuster eventually becomes a disarming exercise in style.