Join the celebration, sing and dance, and discover how it all began! Ten years after Mamma Mia! The Movie premiered, you're invited back to the magical Greek island of Kalokairi in an all-new musical sequel based on the songs of ABBA. Sophie (Amanda Seyfried) is now pregnant, and like her mother Donna (Meryl Streep), she'll need to take risks. The film's original cast returns, with new additions including Lily James as a young Donna, Andy Garcia and Oscar winner Cher.