This movie is the animated, Disney version of Rapunzel. Rapunzel (Mandy Moore) has hair, that when she sings, holds the magical power of making someone younger. So, an evil witch steals her as a baby and keeps her in a tower, raising her as her own daughter and reaping the benefits of her hair. As Rapunzel grows up, she yearns to leave the tower.
This movie is a modern take on a classic fairytale. I felt that the movie was very relatable and funny. Though it is geared toward young children, I still really enjoyed. The supporting characters were very funny, too.
I would say that if you enjoyed Frozen, you will probably enjoy this movie, too. Frozen has the same modern take on fairytales as Tangled does.