Lin Xi, an optimistic military enthusiast, was bound to a "Military Instructor of All Heavens" system after his accidental death, starting a series of ridiculous reincarnations. His mission is not to fight and kill, but to travel to various dangerous worlds and use his advanced military concepts and over-enthusiastic personality to "train" those teams that are destined to be tragic and change their destiny. In his first life, he became a "dog-type" recruit at the border post, using modern physical training methods to "torture" veterans, but unexpectedly united his military spirit; in his second life, he became the commander of a useless squad, using "happy education" to build a group of stragglers into an iron army. However, a mysterious man who indirectly caused the death of his family due to his mission in his previous life, with a deep hatred, launched a crazy pursuit of him in various worlds. Can Lin Xi resolve this deep hatred and complete her ultimate mission in a funny and passionate counterattack?
