When legions of monsters, known as kaizu, rose from the depths of the sea, a war began that was destined to take millions of lives and reduce “human resources” to almost zero in just a few years. To fight with the aliens, a special weapon was created: huge robots, called huntsmen, they were controlled simultaneously by two pilots, whose consciousnesses are connected by means of a neural connection. But even the huntsmen are almost powerless in the face of ruthless kaizu. On the brink of defeat, the defenders of mankind have no choice but to turn to two very dubious heroes – an unneeded former pilot and an inexperienced trainee – who unite to lead the battle of the once legendary but now outdated ranger. Together they are the only hope of humanity, the last obstacle to the impending apocalypse.