Joo Seungho is unable to do virtual reality due to congenital hyperimmersion syndrome a phenomenon of excessive sensory amplification
One day a string of unknown colors comes down to him
It is the tester of the 4th generation VRS device
When he was able to do virtual reality by becoming a tester he thought for the first time
That what he caught was a rope made of gold
When he experienced Lost Sky Online commonly referred to as the 4th generation he realized it
The congenital hyperimmersion syndrome was a poison in the past but it was actually a blessing
Its time to change into a new him that was different from his usual self
Welcome to the world of the Lost Sky