I found this awesome OLD school view master reels of Hans Christian Anderson's The Little Mermaid. I've always loved that version of the Little Mermaid, because it is so sad. There is only a happy ending because of mermaid's sacrifice.
She dreams of other worlds
After his ship sinks, she saves the handsome prince, and falls in love.
She watches to make sure he safely found.
She makes a deal to gain legs, but each times she walks it will feel as though she walking on shards of glass. And she will die if she does not marry the prince.
She finds the prince, but he is already in love with another.
She must either kill the prince on his wedding night or die, she loves him so much, she cannot harm him. She says goodbye to the bride & groom.
Her sisters lament her death, but she is received in heaven.