Seina Yamada, now a grown adult, returns to Earth after spending time in Renza. Many things have changed back home while he's been in space, namely his new living arrangements with Tsukiko Masaki, his mother-in-law.

The second day after Seina's return, a party is held in Masaki Village to celebrate Seina's return and to welcome people new to Earth, particularly Miki, who showcases an extra close relationship to Tsukiko. The women of the village are very interested in the group and in getting their first look at the grown Seina. Miki and the others decide to help out with the village's work so that they too can make their home there. A few days later, Jovia returns from her hometown visit, but..

Jovia confesses to everyone that her identity was discovered in her hometown. An exasperated Seina calls Seto to apologize. Later, Seina, Tsukiko, and Jovia are ordered to get Tabletop Island ready for its use. The first thing they need to do is travel to the edge of the solar system to retrieve the ship that will serve as its base.

The phenomenon that suddenly appeared on the spaceship was identified as Masaki. Julei Shin-Oh's astral body, Masaki's sister, appeared before Nishiman and others. Through Jobia's magic, the astral clone, manifested on the Plateau Island mothership, departed to observe its condition and confirm the current state of Masaki's grafting. Later, it landed on the sea, forming the shape of Plateau Island. Meanwhile, Nishiman proposed living within the mysterious tree unit in Tsukimizu. Tsukimizu eagerly anticipated adapting to the environment and gaining magical abilities.

During the final adjustments of Plateau Island, Tsukimizu, experiencing a magical illness sign in a "dream" during this period, had a dream in a hazy state of consciousness. Despite the vague distinction between dreams and reality, these experiences began to elevate Tsukimizu's potential for "magic." In the midst of the blurred line between dream and reality, Tsukimizu glimpsed memories of the magical "system," which also held nostalgic moments for her. Simultaneously, in the village of Masaki, a shadow appeared at Tsukimizu's residence. It was an investigation into the "events of the previous night" in the sea, but disappointingly, there were "no traces." Glancing around, Tsukimizu noticed a "pamphlet" delivered by GP delivery, unintentionally catching her attention.

Responding to Seto's request, Nishiman and others managed to shape Plateau Island and accommodate members of the pirate guild. However, facilities were not completed in time, leading Nishiman's group and the Earth returnees to be occupied with daily tasks back on Earth. The ongoing efforts involve maintaining Plateau Island, welcoming and monitoring the pirates, but now Earth's overseers have arrived, introducing hectic days. In an unexpected turn, a family of Earthlings decides to relocate. Hearing that only the young boy is arriving first, the overseer "Nanda" struggles with the adjustments, adding another layer of complexity to the bustling situation.