Discover Donna's (Meryl Streep, Lily James) young life, experiencing the fun she had with the three possible dads of Sophie (Amanda Seyfriend). Sophie is now pregnant. Like Donna, she'll be a young mother, and she realizes that she'll need to take risks like her mother did. Directed by Ol Parker; Starring Meryl Streep, Pierce Brosnan, Colin Firth, Stellan Skarsgard, Julie Walters, Dominic Cooper, Amanda Seyfried, Lily James.