New Delhi, Jan. 25 -- Can it be that, like many baby boomers, King Charles III feels misunderstood?

That might sound like a strange question for a man with his own public relations team and easy access to any journalist in the realm. But 16 years after he wrote a book explaining his vision for saving the planet, the king has teamed up with Amazon Prime to make a film spelling out that philosophy.

The documentary delves into Charles' concept of "harmony," the idea that restoring the balance between the human and natural worlds is crucial to combatting global warming and many other major problems facing humanity.

Along the way, the king also confronts his critics, who have lampooned him as a dilettante flitting aimlessly from one cause t...