Sang Yu was originally an ordinary high school student. Her parents divorced when she was young, and her father raised her alone. Her father in junior high school married another man. With her new family, she gradually couldn't give Sang Yu much love. Sang Yu is under tremendous pressure in family and interpersonal relationships but still chooses to be optimistic. By chance, Sang Yu met Zhu Jia who was injured on a mission. It turns out that there are invaders in the seemingly safe earth - alien creatures who want to invade the earth. After Zhu Jia was rescued by Sang Yu, he tried many times to erase Sang Yu's memory but failed. This incident alerted the human guardian organization-Guardians of the Earth. The top management of the organization invited Sang Yu to join the Human Guardian Organization. Sang Yu readily accepted. She felt unprecedentedly happy in the organization and made many friends. Everyone fought side by side and became stronger together. After experiencing life and death, separation, and ups and downs, Sang Yu gradually transformed from a nonsense-talking little sun into a taciturn but extremely reliable team commander. Sang Yu gradually strengthened his determination to protect the world and his teammates.
Mission: The earth is everyone's home