It is well known that Guy and Rada Ga’al’s father died far from home, during an outbreak of an unknown disease, having fulfilled his duty to the end as a doctor and a soldier. Back then, unable to contain the source of infection, the dangerous district was simply hit with a hydrogen bomb. The dead were mourned and forgotten. But the restless Maxim Kammerer accidentally discovers in the special archives of the Department of Science tightly classified documents that say something completely different. So what really happened to Dr. Dar Ga’al and his comrades in the lost jungles of the south? And what does this have to do with a former enlisted man of a special anti-armor unit — the big head, nicknamed Gekrs?..