The legend of the floating island "Laputa" speaks of vast treasures hidden within, attracting the greed of pirates, while the military eagerly seeks a mysterious force said to control the entire world. Both groups chase after a girl named Sheeta, who possesses a magical levitation stone, hoping to use her and the stone's power to find Laputa. As Sheeta finds herself in danger, a young miner named Pazu comes to her rescue. Instantly connected, the two embark on a thrilling and unprecedented journey to find the legendary Castle in the Sky.