Aoi Minamo is hired to be Haru's assistant. When burning sea causes a power outage that threatens life support systems on the artificial island, Minamo rushes to the electrical substation, while Haru uses his cyberbrain to dive into the Metal Network.

Minamo and Sota investigate reports of ghost sightings at Minamo's school.

At the jungle island, Haru realized that he can learn to walk again, and he begins to practice in secret to avoid jeopardizing his job as a Metal diver. Meanwhile, Minamo gets tested for suitability to receive a cyberbrain.

After the spread of weather particles, drastic weather changes occur across the planet, and the burning sea phenomenon returns. Haru decides to use the experimental deep dive suit in an attempt to make contact with Kushima.