Once Upon a Time, A mountain spirit Giri, one with the mountainland, stands tall and proud, but is afraid of passing on to the next segment of life. Giri flys over the mountainside, showing its diverse landscapes and the other creatures that live there. Meanwhile, Ceto is swimming through the deep ocean, only dark forms and brief shots of Ceto in their previous form. Every day, Giri firmly keeps watch over their domain, cold and distant to the other landforms. Girl has a negative interaction with a rain spirit, showcasing their cold indifference. Giri is shown moving through the mountains in the rain, looking unhappily at the landscape around them. But one day, A small ocean bubbles up from under the earth, Ceto, the ocean spirit, trying to expand and move on as fast as they can. Ceto emerges as Giri is surveying the domain, Ceto panicked looking around while Giri stares intently at Ceto with a sad look. Giri decides to stay away from Ceto, and we see Giri receding into a cave in the mountain.