Learning the D'ni language, Anna becomes known as Ti'ana and marries a D'ni named Aitrus; the couple have a son named Gehn. Soon after, D'ni is ravaged by a plague created by a man named A'Gaeris. Aitrus sacrifices himself to save his wife and child, killing A'Gaeris while Ti'ana and Gehn escape to the surface as the D'ni civilization falls.[1]