In Back to the Future 4 (2025), Tom Holland takes on the role of Marty McFly’s son, Michael McFly, a tech-savvy young man living in a futuristic 2045 Hill Valley. When the family discovers an old, dust-covered DeLorean in a hidden garage under their house, they uncover secrets about Marty’s past adventures that Michael never knew existed.
The trailer opens with Michael working on his VR-tech project, only to be interrupted by his grandfather, Doc Brown (played by Christopher Lloyd), who appears suddenly at their home, frantically warning him that time is unraveling. “Something’s gone wrong, and it all goes back to 1985!” Doc Brown exclaims. The music swells as Michael stares in disbelief at the DeLorean, realizing it’s more than just an old car—it’s a time machine that shaped his family’s destiny.
As the trailer builds in intensity, Michael teams up with a teenage genius, played by Millie Bobby Brown, to try and fix the timeline. They embark on a whirlwind adventure through 1985, 2015, and even a distant, dystopian future. Along the way, they encounter younger versions of Marty (using de-aged CGI of Michael J. Fox), and Biff Tannen’s grandson, played by an unrecognizable villainous role from Chris Pratt.
One of the trailer’s most shocking reveals is the return of the Flux Capacitor in a newly upgraded form, enabling the DeLorean to manipulate not just time, but alternate realities. In a tense moment, Michael and Doc Brown debate whether they should use it, knowing it could tear apart the fabric of time.
The trailer ends on a cliffhanger, with Michael racing the DeLorean toward an apocalyptic future where Hill Valley has been reduced to ruins, all while being chased by a mysterious shadowy figure from another timeline—someone the fans speculate to be Marty McFly himself, now altered beyond recognition.
