Natural selection created a new deadly species, known as "eclipse", which is forced to destroy humanity. The scientist named Kurus Kernji headed the organization whose goal was to fight these deadly creatures. For this purpose, he created Osteon, similar to the eclipse of the creatures, which are subject to the teams of a person, from the DNA of which they were created. Now Knezi left, and his assistant Kidogava Rokuko is trying to recruit his teenage son, from which he is separated. Kurus Akira did not want to have anything in common with his father, who, in his opinion, threw him, but the attacks of eclipses make him take his own Osteon Rokuko. Gradually, it is attracted by the organization, whose members hope that he will take his father's place. Akira and his osteon may possibly be little interested in protecting humanity, but they are determined not to be defeated!