Mitsumoto, a highly qualified leader of hunting ships, is reached in the low orbit of one of the moons of a gaseous outer planet of the Teegarden system. His ship escapes to his control and enters for forced landing protocol. Once on mitsumoto land you have to get out of that moon and reach the nurse ship, since it is far away to apply the backup protocol. To get out of this hostile place you have to reach an escape area or perimeter, built from the SOS station in poor condition and taking advantage of all the resources available. To get out of the planet, Mitsumoto must survive its hostilities as well as the enemies that will be lurking in the most unexpected corners. In addition to this Mitsumoto will learn in its advance about alien enemies, their customs, their society and their ancestors, which will give a global vision of them that will help humans in battle.