Charging into The Spirit Race Nest

The dark outer space was silent, concealing indistinct matter of the universe. 

Only the mother nest could be seen floating there, with the three child nests oscillating around it. Being surrounded by the sphere-like little nests, the mother nest didn't move as if it were dead.

...

The moment the space shuttle left the wormhole, it entered a concealed state and put up a barricade against all probing signals as if it didn't exist at all.

The instructor stood in front of everyone, pointed to the spirit race nest outside, and started to give a talk to the freshmen. "Later on, I'll lead the soldiers and charge into the mother nest to kill the spirit mother! I'll leave those spirit children to you guys! The ranking this time around will be based on the number of Spirit Race you kill!"