Three hundred years in the future, humans will expand into the interstellar space, and mechas will become a mainstream tool in military and daily life. Due to his poor life, Bai Xiaotian became a temporary force of the Federation's mecha military academy. With the help of the fully automatic AI "Preserved Egg No. 7" And the genius technician Irene, he was inexplicably involved in the interstellar invasion war. He formed the "Iron Team" with his bereaved friend Jin Shining and the mysterious mecha squadron leader Du Yuchi. They battled wits and courage with the alien prince Anton, and experienced thrilling battlefields, bizarre missions, friendship betrayals and other ups and downs and full of jokes. In the end, you will defeat powerful enemies in the chaotic galaxy, protect your homeland, realize self-growth, and gain friendship, family affection, love and responsibility.