The pathfinder searches for the "path" that grants wishes. It's great that Garam, an ordinary student leaves the world with impulsive thoughts but, when she comes back, the world became a ghost town where all the people and animals have disappeared. To find her family and have the world back the way it was, she must find a “path”. You could be swept away by an avalanche in the mountains, deep seas where it is difficult to breath, hellish labyrinths, and more.
I love the art, i love the plot/story, but i really hate the MC because she is really ignorant and naive. I hope she can grow up as the manhwa goes on though.