"The Princess Happiness" tells the story of Eva and her best friend since childhood, Alberto. Eva is a childrens book writer who confuses reality with fantasy. Together, they embark on dark journey where they will find that the only real truth is their friendship.
| Actor | Role |
|---|---|
 Irene AnulaEva (adult) | Eva (adult) |
| AAlex NeiraAlberto | Alberto |
| LLourdes San MartínEva (child) / Narrator | Eva (child) / Narrator |
| JJose Antonio JimenezThe King | The King |