In the 20 years since control of Hong Kong was returned from Britain to China, access to the vast Chinese market has helped the territory grow into Asia's leading financial hub. But over the last decade, redevelopment has driven up land prices and rent, leaving many struggling to make ends meet: including families crammed into tiny apartments, and senior citizens forced to live in so-called "cage homes" comprised of a single bunk. Yet while many battle to escape such poverty, the flow of people from mainland China seeking wealth and success in Hong Kong continues unabated. Explore the true nature of Hong Kong's unequal society through the living conditions of its poor.