Nila-Fire, the third in the series, has Seth, a Nila Swimmer, and his adopted family of Nila flyers finding themselves back on their home planet, Earth. Assisted by two hikers, Vuna is nursed back to health after his attack by Zerths. Vuna and Zuri’s fast-growing daughter Seva connects them, as flyers, with humans, and they learn their reason for returning to Earth—to assist their own kind! Jiva and Kava go on a mission given to them by Gian, where they obtain the clear crystal and a quest from Sam. Kava returns to the flyers with the clear crystal, while Jiva leaves the flock with a map, a riddle, and Britta—Sam’s housekeeper. On his own mission, Seth is saved by Xcina from stormy waters. He learns his family of swimmers has also returned to Earth and safe from the Zerths. Taken to a lavender planet, Xcina passes the mantle of “She” onto him, but not before giving him instructions to find his father. With new visions of darkness, yellow eyes, and imminent danger, he reluctantly searches for his father. Hearing Sam’s version of events, beginning with his childhood, Seth sets out to reunite Sam with his Nila family of swimmers and Aiyana, Seth’s mother. Seth and his family leave Earth to live in a paradise, which causes a rift for the swimmers. Tragedy strikes, which causes Seth to lose his way. Nila of a new form are coaxed into saving Seth, which rekindles past mistrust between Lara and Zuri, both She. What are Lara’s real motives behind assisting Seth?