Although Shiki and Homura want to deliver medicine to Weisz as soon as possible, they struggle with the attacks from Sylph of the Wind and his assistant, Jinn.

Before they venture beyond the cosmos in search of Mother, the Goddess of the Cosmos, Edens Zero visits Granbell at the request of Shiki, where he has an unexpected reunion.

With Laguna's help, Shiki and the gang obtain a hint for finding Mother and leave Red Cave towards the Verdant Planet Foresta. Meanwhile, Elsie's pirate gang, cruising through the Aoi Cosmos on the Skull Fairy, are being pursued by Justice of the Cosmic Government's Interstellar Union Army.

The Doomsday System is activated and all of Foresta is in danger.

After Poseidon Shura's "Judgment Day" declaration, Shiki and his friends decide to think of a way to counterattack. Laguna suggests an idea that will take Edens Zero to the desert of Planet Sandra.