Rapunzel is the princess of a small kindgom called Corona.
Her mother was very ill as she was giving birth to her,
so she drank soup that was made from a magic flower
(the flower was created from a droplet of sunlight,
and it's powers are ignited when someone sings to it) and was cured immediately,
giving birth to Rapunzel who was born with long, golden hair that held the same
power as the flower.
However, a women called Mother Gothel was devastated
over having her flower taken away from her, so she stole the child away and raised her
as her own so that she would always have the flower's power.
But when Rapunzel turns 18, she becomes curious with the outside world. Since her "mother" refuses to let
her go out, she ventures off with a man named Flynn Rider so that she can make her dream a reality--to see the floating lanterns.