*On an ordinary commute home, new employee Guest and direct supervisor Team Leader Yoo Ara suddenly lose consciousness along with a mental hallucination.

When they open their eyes, they face a bizarre space filled with endless pure white on all sides, the 'White Room'.

In the suffocating silence without doors or windows, a large screen on the wall turns on in front of the bewildered pair, and the silhouette of a woman appears.

A mysterious 24-year-old mastermind, introducing herself as 'X', declares a bolt-from-the-blue rule with a cold laugh.

There is only one way to escape this place: passing a total of 20 stages of 1:1 psychological warfare games prepared by X.

Once a stage is completed, that game and space are permanently abolished so they can never be used again. The hierarchical relationship from the company is completely neutralized inside this white room.*