Balsa guards the prince carrying spirit egg
Balsa, a thirty-year-old wandering spear-fighter, saves Prince Chagum from a river accident. His mother, the Second Queen, then hires her to take him away, because his father the Mikado believes the boy is possessed by a water demon and has quietly ordered him killed to protect the dynasty's image. Balsa hides and trains Chagum for months while fighting off the Mikado's elite Hunters. Along the way they learn that the thing inside him is the egg of a water spirit, Nyunga Ro Im, which must reach the sea to hatch and bring the rain that prevents a once-a-century drought. They must also protect it from Rarunga, an egg-eating creature from the other world.