In an imaginary fantasy world, the "Fantasy Armor Army" is the last line of defense to protect the country. Soldiers need to use their spiritual power to awaken the "phantom core" in their bodies to condense their armor for combat. Lu Chen is an ordinary scout in the army. He has no special talents but is extremely resilient. During a border patrol, he encountered an attack by extradimensional creatures and unexpectedly fought side by side with Su Lin, the mecha commander in charge of support. From their initial differences in philosophy, the two gradually came to trust each other in life and death missions. Lu Chen relied on practical experience to break through the bottleneck of his abilities, and Su Lin also regained his original intention of fighting under his influence. They work together to deal with internal power struggles and external alien invasions. In the iron-blooded military camp, in the mission of protecting their homeland, they develop deep and restrained emotions, and jointly compose a fantasy military epic about loyalty, growth and love.
