Abstract: The environmental crisis is increasing today and this makes it imperative for people more than ever to expand their understanding of the environmental concepts. Accordingly, films can be an effective tool to do that, but finding the right medium is a matter of debate. Needless to say, different forms of films have different effects. Within the same line, the current paper aims to test out the effectiveness of narrative and non-narrative documentary films on the learning and retention of the environmental concepts. The research method was quasi-experimental, administering a pre-test and a post-test on 20 male and 20 female participants between 20-27 years old. The samples were randomly categorized into two groups. Both groups had an equal number of participants who did not have any earlier environmental activities and their majors were not related to environment and natural resources studies. They were from a variety of educational backgrounds. The groups were homogenous in terms of GPA, too. Firstly, the pre-test was administered to both groups. One group watched a narrative documentary on environmental and natural resources for 8 weeks, while the other group watched the non-narrative version of the same film for the same period. Then, a learning and retention test was given to both groups. The MANCOVA test was administered on the data and the findings showed a significant difference between the two groups in terms of learning and retention. It was concluded that narrative films can have a more significant effect on the learning and retention of the variables.