In a luxurious room within an opulent villa, around noon, a young man in his early twenties with disheveled long hair was intensely focused on playing a fierce online game in front of his computer. In this globally popular game called "Destiny," he fought ruthlessly under the name "Slayer of All Beings," dominating every brutal battle.

However, a significant upheaval occurred in the real world. A violent earthquake shook the villa, making the whole world seem to shatter. After surviving the calamity, the young man woke up in a dim dungeon, finding himself in a completely unfamiliar world. The dark and damp surroundings, hoarse angry voices, and his whole body's aching pains left him bewildered and terrified.

Fortunately, he inadvertently activated the "Invincible Slayer of All Beings System" in his mind, and from that moment on, his path of destiny would be radically transformed...