Years ago, a tragic accident led to Kurau's possession by a Rynax. Now an adult, the Rynax powers she acquired so long ago have made her an unstoppable agent.

Kurau convalesces from her injuries incurred in her previous case. Christmas takes care of her, doing the cooking and the shopping.

Meanwhile, Kurau's father, is forced to use his scientific knowledge of Rynax energy to help the GPO. The GPO hunts a stray Rynax, while Doug hunts for any signs of Kurau, since she vanished from his surveillance.

A lonely Christmas goes back to live with Uncle Frank and Aunt Kleine in Switzerland. Meanwhile, Kurau goes back to live with her father. We find out the real reason that Kurau loved the Christmas holiday.