The opening shots are like something out of a Western. A seemingly endless sky. A row of lopsided power lines. Saltbush. On the soundtrack, the wind whistles across the plain, while a sombre, sonorous voiceover intones:

"My father once told us that water didn't always burn. That you could drink it as it was falling. But that was long before his time, before the earth took its last breath and, with it, began to die."

A hand enters the frame, holding a glass bottle, which it fills with dirty water from a pond. Well, not a hand, exactly. A paw. A big, black, furry paw. As the voiceover continues -- "They say the sky collapsed not long after, and that is when the chaos began" -- we cut to an extreme wide shot. A huge panda, wearing human clothes and walking upright, makes his way across the landscape, his cooking utensils hanging from his knapsack and clanging slightly in the breeze.