The original 'Mamma Mia!' film, starring Meryl Streep and based on the ABBA musical, was released, paving the way for the sequel.
Universal Pictures officially announced the development of the sequel to the successful 2008 'Mamma Mia!' film.
Key casting decisions were made including Lily James as young Donna, Amanda Seyfried reprising her role as Sophie, and Cher joining the cast.
Principal photography began on the sequel in locations including Croatia and Greece.
The sequel 'Mamma Mia! Here We Go Again' was released in theatres worldwide.
Young Sophie discovers stories about her mother Donna's life on the island of Kalokairi during the late 1970s, including Donna's relationships with her three past lovers.
Teenage Donna arrives on the island of Kalokairi to attend university and starts her new life, eventually forming a close bond with her friends Tanya and Rosie.
Donna meets the three young men: Bill, Harry, and Sam, each of whom becomes romantically involved with her at different points.
Donna, along with Tanya and Rosie, forms the band 'Donna and the Dynamos', performing music on Kalokairi and gaining local acclaim.
Donna finds out she is pregnant with Sophie, her daughter, leading to poignant decisions about her future.
Sophie, now an adult, prepares to reopen her mother Donna's hotel after her passing, orchestrating renovation and organizing a special celebration.
During the reopening celebration, characters reminisce and see flashbacks of Donna's early life, bringing closure and newfound understanding to Sophie and her friends.