Muhammad Ali Jr. embarks on a deeply personal journey to unravel the mysteries of Parkinson's disease, the condition that slowly claimed his legendary father. Confronting medical breakthroughs, racial disparities in treatment, and long-buried family truths, Ali Jr. travels the world meeting scientists, patients, and icons including Michael J. Fox.

What begins as a search for answers becomes something greater: a mission to transform his father's greatest fight into a legacy of hope, healing, and global awareness. This is not just a film about disease. It is about what it means to carry a name, honour a legacy, and turn pain into purpose.