Fan Casting Mamma Mia! 3

At the Hotel Bella Donna, Sophie is preparing the New Year party, to which the whole family is invited, especially Sam's two sons whom Sophie is going to meet for the first time and who are not as kind as their father. Meanwhile, after a big argument between Fernando and Ruby, she won’t be able to come to the party because of a world tour in order to promote her new autobiography, an opportunity for the little Donny to dive back into the dynamic past of his great-grandparents and discover the facets of first love…