In the last 20 years, the fight against modern slavery has gained popular consciousness. The anti-slavery campaigners actively utilize statements such as ‘’35 million people across globe today have been trafficked into, or otherwise trapped in, slavery’’. One of such organization has been THE WHY, a Copenhagen based NGO that aims to raise awareness about human rights through documentary films. The aim of this thesis is to analyze ‘’modern slavery’’ discourse in mass media communication. Primary data set is a documentary film ‘’Maid in Hell’’ which is part of the WHYSLAVERY? project launched in 2018, consisting total of six films. Taking Norman Fairclough’s work as inspiration and theoretical background for this thesis, this paper will focus on critical discourse analysis and mass media communication. By implementing social semiotic approach of studying documentaries, the results show that there are clear differences in the representation of character is the film. Furthermore, the analysis showed that individualization of social problems has an effect of excluding historical and social context of the kafala system. The results indicate that the film ‘’Maid in Hell’’ is a product of number of sociocultural changes that has a likely effect of constituting ‘’modern slavery’’ discourse. Therefore, this thesis has contributed to the excising literature about modern slavery and its effects on creating knowledge about our current social problems and the analysis of this particular documentary films opens up a number of different issues, problems that need further attention and research.