I've watched this many times. Grandma wants to stay independent and active, and her son wants her to be careful and cautious, and that's just not her. She wants to do whatever she wants, but, interestingly, she wants to influence her granddaughter into not doing what she wants. And anybody who's ever known a 22 year old, that ain't gonna work. Grandma decides she's going to walk to the wedding. It's a long walk. It's 80 miles. The bulk of the movie is her journey, the people she meets, the people that help her, and her physical limitations that we all face eventually. Shirley Knight does a good job.