With talk of a potential Mamma Mia 3, all the questions that linger from Mamma Mia! (2008) and especially Mamma Mia! Here We Go Again (2018) could finally be answered. Mamma Mia! follows Sophie Sheridan (Amanda Seyfried), a young soon-to-be bride who invites her three potential fathers to her wedding without telling her mother, Donna (Meryl Streep). The first sequel, Mamma Mia! Here We Go Again, follows Sophie's grand re-opening of the Hotel Bella Donna after Donna's death a year prior. Present-day events are interspersed with flashbacks to Donna's life before Sophie was born, showing how she met each of the three men who became Sophie's potential fathers.
https://screenrant.com/mamma-mia-3-questions-mysteries-solve/