A galactic military captain named Qinglong chases Jigu, a brilliant but dangerous criminal scientist, across the stars. During a fight, Qinglong falls into Jigu's trap and ends up stranded on Earth, where he befriends Tianyi, a kind and principled young boy. Their peace is short-lived: Jigu follows them to Earth and, seeing how rich its wildlife is, decides to alter the planet's creatures into an army of his own. Now Qinglong and Tianyi must team up with their companions to stop the invasion and keep Earth safe. The series mixes giant robot action with comedy, turning an interstellar manhunt into a lighthearted fight against mutated creatures.