Eight years after the mysterious death of his father, Kaito Kuroba, a slightly mischievous but otherwise ordinary teenager, uncovers a startling secret: the Phantom Thief Kaito Kid—also known as "The Magician Under the Moonlight"—was actually his own father. The former thief was killed by a criminal organization hunting for a mythical stone called the Pandora Gem, which is said to shed a tear when the Valley Comet passes, an event that occurs every ten thousand years. Consuming this tear supposedly grants immortality. Determined to bring those responsible for his father's death to justice, Kaito assumes the Phantom Thief's disguise, stealing priceless jewels night after night in search of the Pandora Gem before his enemies can exploit its power.