Earth, on a planet 3,000 light-years away.

"Hello, sergeant, haven't you found the location of this 'explorer'?"

"I'm sorry, Administrator. Despite our best efforts, we were able to confirm that the source was coming from the northwest, in the range of about 3,500 light-years to 2,800 light-years, at angles between -20° and 45°. There seemed to be something nearby that was interfering with the source, so we couldn't pinpoint it. Also, now the source seems to be gone......"

"Okay...... Sergeant, do your best to find the 'explorer'. After all, what he discovered was our 'food' planet. That's ...... for us Very important! (To be continued.) )