After Zhang Jianguo, a "Zhongdeng" mechanic, was optimized by a large factory, he made a living by "gold mining" for scraps. By chance, he found the "Key to the Ark" and a notepad left by the legendary technology tycoon Chen Tianyu. He accidentally activated the cube and opened the portal. The unemployment crisis and his daughter's serious illness created double oppression. He traveled through the apocalypse, brought back three apocalyptic magical items, and experienced the battle of life and death. After returning from the disaster, inspired by personal difficulties and feelings of family and country, he handed over the "Key to the Ark" to the country and served as a special observer of the "Pangu Project" to assist in the reconstruction of the apocalypse and the upgrading of China's science and technology. He completed a series of feats such as technological deterrence in the South China Sea, planting the flag on Mars, and the Stargate Expedition, and realized the personal salvation of women → national rejuvenation → the upgrading of individual to national value.
