The general objective of this systematic review of the scientific literature was to gather scientific evidence on the treatment of social media narrative and its prosumers. The review considered original publications in journals indexed in Scopus, Scielo, and Dialnet. Two types of analysis were developed, in order to eliminate possible biases. The quantitative analysis allowed us to locate the countries, languages, categorical treatment, results, and other aspects where the most research on transmedia narrative is being conducted. In this way, the scope of the topic in the scientific publications reviewed was established. On the other hand, by means of qualitative analysis, after the screening process, the approach of different perspectives was established: where the research on social media narrative in content sharing spaces leans towards, evidencing an inclination towards Discord. The search for the characterization of narrative content in social media was also carried out, and finally, the conception or treatment of the prosumer's role in the creation of content. It is concluded that the studies where the prosumer of digital platforms is related to a social media narrative should be increased to build and sustain the transcendental role of this as a value for the loyalty of various content in social networks, i.e., be responsible for generating virtual spaces where reliable content is expected to be disseminated.