Gokuu Son and his friends are out camping when three mysterious enemies ambush them. After a quick fight, a fourth enemy named Cooler joins the fray. Seeking retribution for his younger brother Frieza after he was defeated, Cooler attacks Gokuu; however, the latter manages to escape with Gohan Son and goes into hiding. Unsatisfied and infuriated with the outcome, Cooler and his men begin the hunt to uncover Gokuu's location and kill him to carry out their plans of exacting revenge.

A new Getter robot is piloted by three youth as they combat the evil terrors that plague the world.

After the events of the 1st series, Fenarinarsa continues to drift from Earth, so the King asks for help from the kingdom, Marinarsa, to send their daughter, Momo (Who is identical to the 1st one) to Earth to regain humanity's faith in their dreams.