Be kind. Leave the men at home. I've heard reports of men volunteering to watch Phyllida Lloyd's Mamma Mia!, and truthfully, these aren't men I'm related to. This movie is an estrogen-fest. Singing, dancing, sighing, and unless the man in your life always wondered if Pierce Brosnan could sing, just say no. Protect the mental health of the males in your life.
The movie starts off with sweet Amanda Seyfried as Sophie, on the eve of her wedding in Greece. While she is young and has the rest of her life ahead of her, getting married now is top priority, because she has a very important guest list.
The list includes three possible fathers - three because her single mother Donna (Meryl Streep) had an active social life twenty years ago, which leaves young Sophie's paternity in question.
All three possibilities show up and the movie continues from there, with a lot of choreography in between. Words don't do the musical scenes justice; I recommend a youtube search. The "Dancing Queen" sequence was my favorite, with Greek women around the town dropping their work to join in. Women of all sizes and ages, real women, all having a grand old time waving their arms and singing.
Their are several intersecting plotlines, involving the fathers, the past, and Donna's feelings about her daughter's marriage, but let's face it. The plot is a vehicle for the musical sequence to follow.
If you like Abba, singing, dancing, platform shoes, sequined jumpsuits, Greece, cheese, and have a large tolerance for estrogen - induced silliness, then this movie is for you. If you prefer for things to blow up (and I'm not talking arguments, I'm thinking pyrotechnics and destruction), try The Mummy: Tomb of the Dragon Emperor, which includes not only explosions but yetis.
Trust me. I really wasn't kidding about the jumpsuits.