The film goes back and forth in time to show how relationships forged in the past resonate in the present. Lily James plays Young Donna, Donna is played by Meryl Streep.
from hollywoodreporter.com on July 13, 2017
Plot is unknown at this point.
from variety.com on May 19, 2017
Universal Pictures is reportedly trying to mount a "Mamma Mia!" sequel.
from deadline.com on July 10, 2010