Chris Hemsworth has always been associated with larger-than-life roles, but his latest project is deeply personal. In “A Road Trip to Remember”, he rides alongside his father Craig, who was recently diagnosed with Alzheimer’s, retracing family history across Australia in search of memory and healing.

The motorcycle of choice for this emotional journey is Harley-Davidson’s Pan America 1250, which Hemsworth and his father use not just as transport, but as a vehicle for reminiscence therapy—revisiting places from their shared past. Through the stunning, vast landscapes of Australia, Chris and Craig’s journey becomes a funny and moving exploration of a father and son’s bond, proving that love, community and shared experience can be potent medicine.

Their adventure, some of which Chris films himself, is guided by Dr. Suraj Samtani, a dementia specialist and clinical psychologist at the University of New South Wales Center for Healthy Brain Aging, who worked with producers in collaboration with the Hemsworth family over the course of a year.

Hemsworth himself has spoken about the importance of the trip: “My Dad and I had always spoken about taking a trip back to the Northern Territory, where our family had lived years ago, but we had never been able to set aside the time to actually do it. More recently the idea of taking that road trip reemerged with more pressing importance. The result was a more profound, more moving, and more surprising journey than I ever anticipated.”

The one-hour documentary, from Academy Award-nominated filmmaker Darren Aronofsky’s Protozoa premieres Nov. 23 at 9/8c on National Geographic and streams the next day on Disney+ and Hulu.