The Getter Robo has served on many missions, but now it is useless. After the unfortunate death of the third pilot, Musashi, the Getter Robo is burned in his honor. But now, a new Getter Robo has been developed -- Getter Robo G which is able to transform into 3 giant robots: Getter Dragon, Getter Ryger and Getter Poseidon. It seems as if this new Getter Robo has come just in time because a new enemy is already appeared.