11,500 years ago, a mysterious super civilization known as the Empire of Atlantis disappeared from Earth, burying countless enigmas. Prince Almie betrayed his father, the king. As he fled on a starship, he encountered eerie forces from the darkness, carrying fears and doubts of death. In his pursuit of immortality, he ruthlessly developed technology. In the Moon Garden of Life, he met yueya, a woman with a pure soul, his childhood sweetheart yueya, igniting a flame of love in his heart. In the year 197x, the United States was conducting a project named the U Mission (scientific research to find a large crystal on the moon). Legend holds that this large crystal contains infinite wisdom and mystical powers, capable of solving all human problems. Astronaut Roy encountered yueua, who had lost her superpowers, in the Moon Garden of Life. Their meeting seemed destined, while the appearance of the wanderer Oshu guided yueya to rediscover her extraordinary abilities. Almie and Roy engaged in a life-and-death competition to seek the power of the large crystal. Meanwhile, they both fell into a love triangle with yueya, as a dangerous game of love and mystical power is about to begin! !