Ren, a 28-year-old office worker, never imagined that his mundane life would end abruptly under the headlights of a speeding truck. But fate had a different plan. Instead of moving on to the afterlife, he finds himself reincarnated in the most unexpected form, a cave. Struggling to comprehend his new existence, Ren discovers that he possesses a unique ability to influence the creatures within his domain. With only his wits and a growing army of rats at his disposal, Ren must navigate the challenges of his new life as a cave. From defending against ferocious predators to expanding his underground lair, Ren begins to transform his simple cave into a formidable dungeon. As he encounters new threats and uncovers hidden secrets, Ren realizes that survival in this new world requires cunning, strategy, and a sense of humor. With each battle and every encounter, Ren grows stronger, adapting to his unusual role as a sentient cave. Join Ren on his journey of self-discovery, resourcefulness, and absurdity as he embraces his second chance at life, one rock at a time.