Lee Hyun finds himself in a perilous world of cultivation where the strong prey on the weak, with a body that never ages. If anyone discovers his secret, he could end up as an ingredient for alchemical pills or a subject for horrific experiments.

After learning just the basics of cultivation and growing spiritual herbs, he decides to dig a tunnel no one can find and live in hiding.

With endless time at his disposal and a tunnel deep underground, he’s ready to quietly enjoy the good life. A safety-first recluse’s journey to immortality!