Sang-ho and Sun-ja are kidnapped by someone and live in brutal abuse while performing acrobatics in a circus troupe called the "77th Dan". One day their uncle comes to visit them and they try to escape, but when Sun-ja is captured by the circus, a black hooded person suddenly appears to help them.

When the evil T. Devil wants to take control of the galaxy, he enlists Andrew to help him in his quest for inter-galactic domination. Andrew starts capturing all of Earth's spaceships in order to investigate the planet. Meanwhile, on Earth, the scientists become curious about the disappearing ships and form a squad to investigate. When Andrew begins the invasion, the squad must enter into an epic space battle with the aliens with the fate of the world at stake. Can mankind overcome the awesome power of the alien invaders and save the world?