A documentary on the creative process of the Compañía Nacional de Danza under the artistic direction of Joaquín de Luz. This documentary goes through the different stages of the creation of a dance show that tours around the world. The choreographers and dancers perform the ballet of Giselle. A solitary and eternal dance that leads her to madness. A descent into hell where the soul is darkened in an eternal night, where the only bond that remains alive is that of her love with Albretch. A never-ending waltz.