The gang of Nam-Jak chases after the Hercules Mond in dreaming of the
universe conquest. One day the Hercules Mond falls down on the earth.
Hyeong-Ki, who observes the heavenly bodies, traces the place where it
falls down with his brothers. In this moment, the glaze of the Hepatos
meteorite is absorbed into his body. The princess rescues Hyeong-Ki who
is
confined in the cave, and then makes him as Sparkman to protect justice.
Because of the attack of gang of Nam-Jak, Seoul is seized with fear. The
Sparkman rescues Su-Ji with the power of thunder and attacks the gang of
Nam-Jak. The high-five robot of Nam-Jak and the queen robot of the
princess fight with each other. After the princess destroys the gang, she
comes back to the Twin Star with Hercules Mond.