Have you read the book? It's a good book but I don't know if I will take DD10 and DD6 to see it. They love Miley but it's NOT a kids book. It's a typical Nicholas Sparks book where the characters deal with some kind of adversity while finding "true love", LOL. This one is quite sad, got me very choked up too.
Spoiler: (highlight to read text)
The book deals with a mom sending her 2 teenage children to North Carolina to spend the summer with their dad which they haven't seen in years. Well, it's because dad is dying. Dad and daughter reconnect (of course) and write one last song together.
Hope that helps!