Second Malastarian War

The Second Malastarian war is a conflict that occured in the conclusion to Power Rangers: Rebirth. It began with Fyrus' second attempt on taking over the world by annihilating the entire human race and keep the planet for himself.

Preparations
In Zoness, Fyrus was prepared to unleash his revenge on Earth and the Power Rangers to prove himself as the ruler of the universe. Once their forces were reunited after retreating from other planets thanks to resistance groups fighting them. Some of the Malastarian forces were scattered on Earth avoiding capture from Global Army. When the Global Army was formed, they prepared and trained themselves to fight against these future threats.

Knowing the danger Earth would face again, the entities of the constellations arrived on Earth recruiting six young people to become the new champions of Earth. These people were a former US Army Ranger, a former air force pilot, a high school student, a media mongul, a Wind Ninja and a federal agent.

Battle
The Malastarians attacked after the death of Deathowl, who gave Fyrus the signal to begin his final assault on Earth. The Global Army quickly responded to the attack all over the world, but like last time they were outnumbered yet unwilling to go down without a fight. The old and new Power Rangers took the stand in Angel Grove and fought hard. The old Power Rangers fought and defeated Onox, but quickly lost whatever power they had left after the Morphing Grid was badly damaged in the last war.

When Fyrus fought the Zodiac Rangers, he had the upper hand even if they put up a fight. But they were not going down so easily and vowed that they would fight until they die. Suddenly, the heavens open revealing beams of light which are the spirits of fallen rangers and form an energy wave spreading throughout the world eradicating all Malastarians in Earth and space and on the planets they occupied for years.

Fyrus became a giant and the Power Rangers summoned their Zodiac zords to form the Zodiac Megazord as well as the Sagittarius Warrior Megazord to even the odds. They then finally succeed in killing Fyrus, thus stopping the invasion.

Aftermath
After the battle, the people of Earth and Global Army celebrated in high spirits, knowing that the Malastarian threat was finally ended forever.

Trivia

 * The spirits of the fallen rangers arriving to help is a reference to the final episode of Power Rangers: Wild Force, where the wild zords return because of the Wild Force Rangers willingness to fight.
 * Giancarlos originally intended to have the old rangers powers restored and help the old rangers fight.
 * The old Power Rangers were originally going to be killed. But Giancarlos decided to keep them alive for the two sequels ahead.