Mujin Wakusei Survive episodes

On the Orion, Chako determines that virus-like nanomachines have entered Adam's body and changed the nanomachines already there into malignant ones, and they probably entered through the scrape on his hand. They decide to head directly for the nearest sub-terraforming machine. After passing through a forest, they reach an ancient, crumbling city. They stop by a large building that they hope is a hospital, but the medicines they find had already decomposed long ago. Chako estimates them to be five hundred to a thousand years old, the same age as Adam's ruins. When Howard finds writing on a medicine bottle that's the same as writing they saw in the ruins, they realize that Adam's people had come from this planet, which raises the question of why he was in a spaceship on the island.

The children enter the terraforming machine, leaving Sharla behind to look after Adam. Inside, Luna finds a stairway leading deeper, where they are attacked by a large humanoid robot, which Chako identifies as a maintenance robot. They defeat it when Kaoru plunges his knife into its head. The strange voice which Luna heard earlier speaks to Luna through the robot. It identifies itself as the main computer that manages the terraforming machines, Survive. With Luna translating for the other children, Survive recounts the history of the planet.

The Orion travels through a desert, but progress is slow, as sand keeps getting into the engine room, forcing them to stop while Shingo and Chako clean it. When they're on the move again, they have lunch together, but food and water supplies are starting to get low. To cheer them up, Sharla shows everyone a desert flower that she found, made of crystallized sand, but Howard, getting frustrated and afraid, grabs it and smashes it on the floor. Adam realizes that Sharla has been sharing her water ration amongst everyone else, and tells Luna, but Sharla promises Luna that she's ok.

The children sit stunned by the side of the quicksand pit. Luna and Shingo each blame themselves - Luna for suggesting they go to the mainland, and Shingo because the Orion was his design. Menori, knowing that they would never survive in the desert in the day, forces them all to start walking. They walk by night and rest by day, reaching a forest at the edge of the desert the following night. Chako tries to lighten the mood, but Shingo becomes angry at Menori's hard-line stance and the two get into an argument. As they lie down to sleep, they all recall memories of Howard and Sharla.

The children find a door in the hull, which opens when Luna holds up her hand. Inside, they encounter a maze of passageways, but drones quickly find them and they are forced to flee. After they run past one section of corridor, a small being emerges from a hatch in the wall, and instantly recognizes Adam. The small being, who speaks a language only Luna and Adam can understand, asks the children to follow him, but assuming him to be another enemy, they run from him. When the drones chase the being instead of them, they realize they can probably trust him, and when he appears in front of them from another hatch, they decide to follow him.

Outside, the children gather food while avoiding the drones. They discuss how much the area reminds them of their island, and Adam is excited to see a pague, except it's quite small. As the pague returns to its mother, two drones arrive, but someone shoots arrows at them from the bushes and destroys them. In a moment, Howard and Sharla emerge from the bushes. The children have a tearful reunion. Sharla tells the others that when they were sucked down by the quicksand, they fell into flowing water underground. Howard, however, sits in stoic silence. Sharla passes it off as him being tired, and prevents Chako from scanning him. When Luna and Sharla make skin-to-skin contact, Luna feels a weird sensation.

Outside in the forest, Sharla stands communicating with a drone, agreeing to continue observing Luna. Elsewhere, Luna senses the drone, but when she and Kaoru run there, they only find Sharla. Worried, they head back to the hidden room. Together, they come up with a plan to reach Survive's chamber and accost the computer directly. The security drones act largely autonomously, guided by the sensors in each section - Shingo and Chako will use a modified chip to disable the sensors, meaning that so long as they stay out of direct sight of the drones, they won't be able to detect the children. Luna and Kaoru go with them for defense.

Chako reveals to the others what they suspected, that Howard and Sharla were being controlled by Survive. Luna and Kaoru follow Howard and Sharla, but encounter drones trying to force their way into the hidden room. They return to regroup, but realizing there are no more safe places to hide, they decide to attempt a frontal assault on Survive's room. Shingo finds two infrared inhibitor particle nebulizers which they can use to confuse the drone's sensors in the same way that Howard's mirror worked earlier. In Survive's room, Survive tells Howard and Sharla that he needs to obtain Luna's power for himself.

Survive shows the children images of earthquakes causing damage all over the continent, but he cannot determine the cause of them. He explains that he needs Luna's power to save the planet, even if he has to absorb her to get it. The children discuss escaping the planet, but Survive threatens them with a huge swarm of drones. Luna offers to investigate the cause of the imminent destruction in exchange for their safety - though Survive is supremely logical and has access to all the data, the humans have the ability to see connections and make intuitive deductions.

Survive has detected the gravity storm approaching, on a direct collision course with the planet, due to arrive in three days. Shingo thinks they can save the planet by using the gravity control unit on Survive's spaceship to create an inverse gravity field, cancelling out the gravity storm. With Survive's computing power, the children test a simulation using the anti-gravity sled's smaller unit, and are successful. However, since the plan requires detaching the gravity control unit from Survive's ship and sending it into the storm, Howard and Menori object, saying they should use the ship to return home while they can - there are no other spaceships or sufficiently powerful gravity control units on the planet. The other children agree that they have to save the planet, and Howard storms off.

The children spend time preparing for departure - learning how to fly the ship, testing systems, ensuring everything is ready. On their last night before they start the mission, the children all gather in the forest by the lake, and remember the events that brought them to this point. Howard worries that it might be their last night, but Kaoru tells him they're not going so they can die - it's so they can live. The next day, they evacuate all of the coffins from the ship, leaving Adam and Tako behind to take care of them and the planet, and then prepare for takeoff. With Kaoru as pilot and commander, Shingo on engineering, Chako looking after the computer, Bell on power systems, Menori and Luna on flight plan and navigation, Howard on life support, and Sharla on communications, the takeoff happens without a hitch.

Shingo realizes that it is no longer possible to detach the gravity control unit from the ship - to stop the storm, they'll have to take the whole ship into the storm. Kaoru and Bell each volunteer to do it alone while the others escape, but the rest remind them they agreed to do it together. However, Luna, still with Survive, activates their seatbelts and ejects the entire bridge from the ship. She farewells each of them individually, then takes the ship into the gravity storm.