Instead of dreaming about a prince sweeping her off her feet, Cinderella dreams of starting her own business and being a fashion designer. This narrative helps set up the entire film and also plays a key role in differentiating itself from the Disney version. In this version, Cinderella actually doesn't want to attend the ball but is convinced to go so she can sell her dresses to wealthy attendees.
While the film has received criticism for its "girlboss" narrative, I think having Cinderella be a businesswoman is a welcome change from the classic Disney narrative that a "happy ending" equates to falling in love and getting married. Although, I would have liked to see more depth to the storyline, especially since Cinderella does end up falling in love and getting together with Prince Charming.