Dokja Kim, an ordinary office worker reading an unpopular web novel, is intent on surviving a sudden real-world apocalypse when his favorite story magically becomes reality. But when the world resets, he is the only reader who knows the ending, and has yet to meet the story's actual protagonist. Using his experience and exclusive knowledge from his past reading, Dokja recruits a few talented companions to clear deadly scenarios, build a nebula, and earn enough coins to fund it all. But will he be able to change the tragic ending and stop the constellations' games?