'Ye have been summoned'

Korea's special forces Captain 'Rough San' and female officer 'Kim Biyeon',

Suddenly encountered a training accident resulting in their fall

In the morning, the two people saw an unfamiliar view spread before them

"First we must survive!"

"We've arrived here, but there may be a way to return."

"We must never forget those that we must protect."

The desperate survival of a man and a woman in an unfamiliar world spread out before them!