Could it be that we are all involuntary participants in a huge experiment, threatening humankind? According to the researchers in "We The Guinea Pigs", this might very well be the case. As plastic has gained ground in our lives over the years, there has been an inexplicable increase in a number of diseases and disorders. In the past, 1 in 20 women used to get breast cancer - today it is one in eight. Men's sperm quality has been halved in 50 years. And the number of children and adults who are diagnosed with attention deficit disorders has increased explosively. In the film, we meet leading researchers as well as follow case studies of ordinary people. The 40-year-old woman who has aggressive breast cancer, involuntarily childless couples and the young woman with ADHD. Are these people the victims of unfortunate coincidences - or is there an explanation? The researchers are in no doubt. They know that our natural hormones can be disturbed by chemicals from, among other things, plastic. Experiments on animals have shown that it is especially in fetal life that adverse health effects can occur. Before you were even born, it could be that you were pre-programmed to get various diseases and disorders later in life.