Mysterious black towers have appeared all over the world. Inside them are monsters, danger, and the promise of power and fame. Only a select few are chosen to enter as players. Everyone calls it a once-in-a-lifetime opportunity, but 25-year-old Juhyeok Bong calls it a death sentence. He is a timid, anxious self-proclaimed “wimp,” perfectly content with staying under the radar… That is, until he is named as a player. Will he risk everything by entering the tower, or keep running from the one chance that could change his life?