MAMMA MIA! is about single mother Donna, who lives with her 20-year-old daughter Sophie on a small Greek island where she runs a self-built taverna. While Donna stands her ground - even without a man in her life - Sophie longs for romance, children and a classic dream wedding in white. But before the young woman says yes to her prince charming Sky, she wants to finally meet her father. When Sophie accidentally comes across her mother's diary one day, she finds out about three possible fathers who were involved with her mother around 20 years ago. To finally put an end to the uncertainty, the bride-to-be invites her three potential fathers to the wedding ceremony. When Donna's best friends from days gone by arrive, the chaos is perfect ... and the guessing game about Sophie's father begins