The Fire Within Us - Elements

A prequel of the Element series.
Fireflight was running, she was always running. Away from her own tribe, away from her past. Forever and ever she ran. She could never stop, or the grief would overtake her. So she journeys to a forbidden land, another tribe. Alone and afraid, she's captured the minute she arrives, the longer she stays, the more she learns about the world she had been sealed off from, just when she thinks her life might become normal, the prophet speaks.