Kim Dok Ja is an ordinary office worker and the sole devoted reader of the obscure fantasy web novel *Three Ways to Survive in a Ruined World,* which has just concluded its decade-long run. Unlike anyone else, he knows the novel’s entire story—including its ending.

One day, reality shatters as the world transforms into the setting of "Three Ways to Survive in a Ruined World". Now trapped within the novel’s universe, Kim Dok Ja must navigate its apocalyptic trials alongside its protagonist, Yoo Jung Hyeok—a powerful warrior blessed with the ability to return to life after death. Cold, strikingly handsome, and unparalleled in combat, Yoo Jung Hyeok is destined to save the world.

As their fates intertwine, Kim Dok Ja and Yoo Jung Hyeok embark on a perilous journey to prevent destruction, joined by a cast of formidable allies, including Yoo Sang A, Lee Hyeon Seong, Kong Pil Du, Jung Hui Won, Han Myeong O, and Lee Ji Hye. Together, they must unravel the secrets of this world and alter a fate that was once set in stone.