Sky Defense Line

In 2075, a giant alien fleet occupied the edge of the solar system. The alien airborne ships relied on high-efficiency energy shields to render all human space weapons ineffective. The Earth hastily established a UEDC joint defense organization. Retired veteran mecha engineer Chen Tie and his apprentice Li Mo were originally maintaining the Tianqiong series of mechas used as cultural and tourism exhibits in Qingdao. The sudden wartime call-up broke the peace. The two rushed to the Tianjin modification base to inspect and modify twelve mechas to form the "Iron Dome" mecha company. Relying on the atmosphere's ability to weaken alien shields, the entire team rushed to the Qingdao coast to set up an ambush, and created a unique segmented charging strategy to severely damage the airborne probe. However, the enemy ship collapsed and exploded the moment it landed. After a white light, many team members disappeared mysteriously, and the ground cracked and revealed a strange blue light. The secret past left behind by the alien reactor twenty years ago, and the deep mystery of the alien invasion are slowly revealed. Mortals drive steel mechas to shoulder the battle to defend human civilization.