Food starts at the top and rides the platform down. Each level eats as much as they want. How do the lowest levels survive? Find out when you are randomly reassigned.

I saw both parts (yes there's platform 2 also) and remind me of the worst times in my life: the communist era. And I think this spanish movie exactly that wants to transmit: how is to live in communism. Many spanish movies have a tendency towards communism.

The 2nd part is even more gruesome.