The story is set in Germany during the Renaissance. Giselle is a peasant girl. She falls in love with Albrecht. He is a nobleman pretending to be a peasant boy. Giselle is shocked to discover Albrecht is going to marry the princess Bathilde. Her heart breaks. She goes mad (insane, crazy) and dies. One night, she rises from her grave. She wants to protect Albrecht from the Wilis. The Wilis are the ghostly spirits of dead girls. They force men to dance to their deaths. 