This study analyzes how emerging adults negotiate their relation to alcohol in the context of declining youth drinking and how this relationship changes over time. The sample consists of longitudinal qualitative interview data (N = 28) with 9 boys and 19 girls aged 15 to 21. The participants were recruited through schools, social media and non-governmental organizations from mainly the Stockholm region and smaller towns in central Sweden to reach a heterogeneous sample in terms of sociodemographic factors and drinking practices. We interviewed the participants in-depth three times between 2017 and 2019. Thematic coding of the whole data with NVivo helped us select four cases for more detailed analysis, as they represented the typical trajectories and showed the variation in the material. We used the master narrative framework and Bamberg’s narrative positioning analysis to examine the data. The analysis demonstrates what kinds of narrative alignments in identity development encourage heavy drinking, moderate alcohol consumption, and fuel abstinence. The results suggest that the decline in youth drinking is produced by a co-effect of multiple master narratives that intersect and guide the identity development away from heavy drinking.