Living in an underground village their whole lives, Simon, a timid boy, and Kamina, a bold and ambitious rebel, unearth a mysterious object that unlocks a powerful ancient weapon named Lagann. Teaming up with the fiery redhead Yoko, armed with a colossal gun, they repel an attack from the surface world. Witnessing the sky for the first time, the trio embarks on a journey to discover the surface wastelands, encountering humanoid