The dungeon. Traps and monsters. Those who can successfully clear a few floors can make enough riches to live their whole lives lavishly. But, just as many attempt to climb higher, losing their lives in the process. No one has reached the top. Veteran explorers say that success in the dungeon is basically up to luck. But no one has been truly lucky-yet. This is the story of James Lu, a regular person –no, a worse than average person– that still became a dungeon explorer – through nothing but luck.