The Coming of the End

The earth is attacked by a mysterious signal. What kind of existence is this powerful civilization? Will they really go to war with the earth? How should the earth protect itself? What contribution has the protagonist made in order to achieve these goals? The content is all in this book. This book is original to the author. There are some references, but there is no plagiarism. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.