It shows exactly how animal proteins (meat, milk, eggs) affect the human body and shows the relationship between animal protein consumption and increased risk of disease. It also shows how you can get the same amount of protein from plant sources, which also give you various nutrients and minerals as part of the package.
Not only does it cover the health impact of animal protein, it also covers the environmental degradation that is caused and explains how it is linked to poverty and starvation in non-Western countries.
I found it to be an informative movie with simple information described well. The graphics used may leave a little to be desired but you can just listen to it as an audio file and get the same amount of information out of it. It reminded me a bit of Food Matters.