Su majestad es un cambiaformas

Violet, a farm girl from Riverford, rises to become a royal consort and bears Emperor Henry two sons. But behind the palace splendor lies a dangerous secret: at night, the princes transform into black panther cubs. As rival consorts plot against her and misunderstandings strain her marriage, Violet fights to protect her children and conceal the truth until the secret is exposed before the entire court at a royal birthday banquet.