In this study, the process of learning Turkish as a foreign language by watching TV series was analysed. It is a qualitative based study with document analysis, case study and mixed research design. The case study is based on the analysis of data obtained from 44 citizens of the Republic of Kosovo who have learned Turkish by watching TV series. 56.81% of these people do not know Turkish, while 29.54% of them know very little. It was found that after they watched a TV series with content in the target language and subtitles in their native languages for a period of 1 to 2 years, they achieved gains in four language skills at different levels. Accordingly, it was found that reading skill was obtained at B1 level with an average score of 3.02, writing skill at A2 level with an average score of 2.93, speaking skill at B1 level with an average score of 3.07, and listening skill at B1 level with an average score of 3.14. During this period, the TV series were basically watched for entertainment purposes, not for learning. The content of the TV series was in Turkish which is the target language. Subtitles in native languages, such as Albanian or Bosnian were added. After some time, they do not need subtitles in their native languages to understand the TV series. Learning takes place in a natural learning environment, either through acquisition or unconsciously. Language skills are learned in the sequence covered in the literature. The most difficult language skill is writing. Technological tools such as television, smartphone and computer together with some learning styles are also employed. The approach of learning a foreign language by watching TV series is considered to be authentic in terms of learning and teaching style, method, theory, strategy, and so on. In this context, it is recommended that detailed studies and analyses that will contribute to its adaptation to existing systems and better understanding of the system be made.