Tristan Lane, the Lord of the Nether Prison known as Lord Nether, returns to his home country to protect his childhood friend Nina Sterling after she is attacked overseas. The two have a childhood engagement arranged from a young age. Nina is obsessed with the mysterious Lord Nether, but only views Tristan as an ordinary security guard, and is fully resistant to their engagement. Nina holds the core technology Dragon Chip, which has attracted the covetous attention of various forces. Tristan easily takes down a group of thugs, nearly exposing his identity as Lord Nether, but Nina still does not believe his true identity. The main villain from Kyoto kidnaps Nina's parents to coerce her into surrendering the Dragon Chip. Tristan secretly mobilizes global consortium forces, defeats numerous martial arts experts, displays his full power as Lord Nether, eradicates all forces of the Four Great Clans, and his identity is completely exposed. Nina finally realizes the truth, and stays together with Tristan.
