What is the main content of The Romantic Period's excellent ballet Giselle?
The synopsis of the ballet Giselle is that Giselle, a peasant girl, falls in love with Albert, a young earl disguised as a farmer. Later, the forester who secretly loved Giselle took the count's sword and clothes, and revealed his true identity in front of his fiancee and father. Giselle was shot and killed. The count felt guilty and went to Giselle's cemetery in the forest. At this time, the female ghost surrounded the count and forced him to dance. Giselle protected the count. At dawn, the female ghost left, leaving only the earl on the ground in the forest, sad and sorry.