Corona pandemic has shaken the world,  following the trail of  two   past  pandemics  like Plague and Spanish flue . It is like a bloodless world war , a third world war against human. It is a battle between brainy and brainless, but  these brainless organisms are more intelligent than we think.  Time and again, their fighting strategies have brought the human to their knees. This book is an account  of this invisible battle inside human body , in the perspective of a Covid virus.  This is a first person narrative  by this  virus  about its own  journey through human body while participating in that battle, and its amazing experience in this inner cosmos, at the microscopic dimension. While hitch- hiking across the  inner universe, a covid  virus will  unfold   these  microscopic  worlds to the readers  through its eyes. But soon the  ambience of this inner universe is transformed into the scene of  a battleground, the silence of this micro cosmos is  shattered by the fierce  fighters of two invisible military forces, one with brain and other without it. The reader will witness this fierce battle between brainy and  brainless  while experiencing  a  fascinating  journey through  this inner universe .