Meryl Streep's character is a married mother of two teens. She is happy to be a mother and wife but she is also lost within herself. She does love her children. She also loves her husband but she really doesn't think she ever was in love with him. She has doted so much on her husband and children that she has forgotten who she really is and what makes her happy. Her husband takes her children to a fair for four days and she is left home alone. During this time she meets a passerby who gets lost and asks her for directions. It is a photographer for National Geographic played by Clint Eastwood. He is on an assignment to take photographs of different bridges. This was his first romantic role.
She becomes captivated by him and his stories and falls in love with him. She begins to feel that there is a possibility for her to finally do something for herself, be selfish for once and be happy with someone else.
I can go on but I dont want to ruin it for someone else that hasn't seen it.