One day, Carlisle Cullen walks outside to see a baby girl in a basket on his porch. The girl's name is Luna, and her mother has just died, and her father abandoned her.
5 years later, Luna is a hyperactive beautiful girl. She thinks her whole family is normal. But now, Luna has been diagnosed with acute leukemia. Slowly, it starts to kill her.
Now, the Volturi is on the Cullen's trail after they find out they have been raising a human child. They threaten to kill them all, but they won't on one condition:
Edward joins the Volturi, and they kill Luna.
Filled with heartbreak, sadness, and happiness, Unbreakable Bond is a beautiful story showing the struggle the Cullens must go through to try and save their beloved human child.