During the early days of World War II, the fate of Western Europe hangs on the newly-appointed British Prime Minister Winston Churchill, who must decide whether to negotiate with Adolf Hitler, or fight on against incredible odds.
A struggling musician realizes he's the only person on Earth who can remember The Beatles after waking up in an alternate timeline where they never existed.
Five years after the events of Mamma Mia! (2008), Sophie prepares for the grand reopening of the Hotel Bella Donna as she learns more about her mother's past.