So the pair take flight to find a hometown that feels right, calling on friends and relatives around North America in a series of vignettes that teach them how not to be good parents. Between the goofy, talky soccer mum (Janney) to the extreme Aquarian hippie (Gyllenhaal), the two end up more confused than they started.

It’s been called everything from the savage continent to the New World. Spread over 30 million square kilometres, it has virtually every landscape and climate, life form and geopolitical society known to humankind. Is there any wonder our fascination with Africa never runs out?

Every city has a side it doesn’t show the world, and this riveting documentary explains why that of Los Angeles is more dangerous, explosive and racially charged than most.