Just three years before the famous Harry Potter was born, the Potters gave birth to a girl. Yet, Isabella Potter wasn't exactly what you call 'ordinary' though, she had something that only one person had every two centuries. This one person's blood will have, instead of human blood, their blood will be replaced with dragon's blood. When the Potters died, Isabella was forced to live the six years before school in Hogwarts. Will Harry Potter ever meet his long-lost sister?