In an era when space travel is open to everyone, there remains one region of the universe where all life and hope are banned—the black hole. This merciless star consumes anything that ventures too close, whether it be living beings, matter, or even light itself. Even the boldest explorers refuse to speak of going there due to the danger. That is, until one day, a man dressed in fiery red announced to the entire cosmos: "At the deepest point of the black hole lies a mysterious place called Rainbow Sea. It is a realm filled with precious gems, rivers of gold, and skies draped in rainbows. Anyone who reaches it will have all their wishes fulfilled." This proclamation ignited the fervor of the whole universe, drawing people from every corner. They followed the man in red into the black hole, and ultimately, none returned. The adventurers who vanished alongside the man in red came to be known as the descendants of the despised "Red Devil," and Rainbow Sea was dismissed as the greatest lie in history.
Ten years later, the son of Mailin, Maidang, is a teenager who grew up on Earth. Determined to keep a promise he made with his father, he resolves to set out in search of the legendary Rainbow Sea. Thanks to the rainbow stone left behind by his dad, he gains a magical ability: the power to fight using cooking techniques. He eventually destroys the no-fly facility set up by the Evil Galactic Eye organization on Earth. Along his journey, he picks up a strange traveler who claims to be a king—a rabbit named Gudong.
