People live in reality and occasionally take a walk through their dreams. That's called dreaming.
But what if people lived mainly in their dreams, and their physical bodies in reality were merely vessels for entering the dream world?
On his thirtieth birthday, the male lead becomes one of these people.
In reality, he's timid and submissive. In dreams, he strikes back with all his might.
Chasing after his dream girl, beating up his boss, eating and drinking to his heart's content, being hunted down and then turning the tables... Amid a string of events, he gradually figures out the rules of the dream world.
But just when he thinks he can keep living carefree in his dreams, a series of changes in reality leads him to uncover a secret buried for years...
So he gives up enjoying himself in the dream world every day and sets his plan in motion...