La fille mal gardée (English: The Wayward Daughter, literal translation: The Poorly Guarded Girl), in the production by Frederick Ashton for the Royal Ballet, which premiered on January 28, 1960. Since its inception Ashton's staging has become a celebrated classic of the ballet repertory.

Lise and Colas are in love and want to marry. However, the Widow Simone wants Lise to marry the dimwitted, but extremely rich, Alain, and has arranged (with Alain's father Thomas) for a marriage contract between Lise and Alain. The Widow Simone does her best to keep Lise and Colas apart, but is unsuccessful in her attempts to do so.

Full synopsis: Wikipedia