Yuri Mihairokov, who had worked for five straight years without ever taking paid leave, is often seen decorating the Toy Box with carnations or staring out into space. One day, Hachimaki learns that Yuri spends time each week in the Records Section looking through debris files. There’s something he’s looking for.

Tanabe, a new recruit to Technora, arrives at the International Space Station. She’s assigned to the Debris Section, where she will be helping to clean up space debris. There, she meets Hachimaki and his buddies. Unfortunately, the Debris Section is looked down upon within the company.

Hachimaki’s mentor, Gigalt, visits the Debris Section to give guidance on security. As it turns out, Gigalt had been a member of the Debris Section in the past, and Tanabe is entertained by his stories of the past. But after solving an incident together with Gigalt, Tanabe learns something shocking about him.

The crew returns from the Moon to the Space Station, where they continue their duties. They hear a rumor that Fee had found a better position in another division, shocking the Debris Section. They decide to set out to capture debris without Fee, so that she can rest assured that the Debris Section is in good hands.

Hachimaki is at the lunar hospital to receive treatment for a leg wound. There, he encounters a girl named Nono. Tanabe seems a little upset that the two seem to have hit it off. Hachimaki soon learns the truth about Nono.

Hachimaki, Tanabe, and Fee arrived at their long-awaited vacation on the Moon. Tanabe can’t contain her excitement. Hachimaki is roped into helping Tanabe find an apartment. When they arrive at her chosen apartment, it turns out to be a sketchy building with horrible neighbors.

Hachimaki’s team gets a long-awaited vacation on the Moon. Being her first time there, Tanabe is excited. The ferry trip is four days long. Along the way, Hachimaki encounters a girl named Sia, and they bond over spaceships. On the third day of their ferry trip, Hachimaki is caught up in an incident.

The son of the INTO chairman arrives to learn about debris collection. Annoyed by his snobby behavior, Hachimaki attempts to turn him away, but he relents when the others convince him to play nice with the chairman’s son. After a while of tolerating his impudent behavior, Hachimaki finally snaps at a particularly arrogant remark.

Tanabe writes a will in case something were to happen to her in space. She briefly considers using Hachimaki’s will as a reference but is disappointed at its lack of substance. What should she leave behind when she dies? Toy Box collects the coffin of a space pilot who was buried in space 50 years ago. Just as the crew is about to return it to space, Tanabe does the unthinkable.

The Von Braun’s departure is approaching. Hachimaki and Tanabe visit the Debris Section. The team make an excuse for the two to go out into space.

Hachimaki is selected to board the Jupiter exploration vessel, the Von Braun. He visits Technora for the first time in a while and learns that Tanabe is back on Earth. Hachimaki heads home one last time before his voyage to Jupiter but ends up in an accident on his way to visit Tanabe.

The Space Defense Front’s terrorist activities endanger the Von Braun. There, Tanabe finds a wounded Claire. The two escape in a rescue pod but end up stranded on the lunar desert. Carrying Claire, Tanabe walks to the nearest establishment. Claire insists that she be left behind.

The world watches as the first-ever lunar INTO summit is held as the Space Defense Front’s activities gradually become more noticeable. Fee and the Toy Box 2 are out in space to collect debris around the lunar station in an effort to thwart would-be terror attacks. Just as Fee discovers an unidentified ship, a gun is pointed at her head.

The Debris Section is transferred to the Moon. There, meanwhile, Hachimaki is investigated for the incident aboard the Von Braun. Hachimaki is surprised to find that Claire is also being investigated. He also bumps into the team on the outskirts of town and learns that Gigalt is in the hospital, and pays him a visit. Meanwhile, an INTO summit is being held outside of Earth for the first time ever.

At last, Hachimaki arrives aboard the Von Braun. He’ll be there for the next six months for the third phase of crew exams. Tanabe manages to get a hold of him on her way to the Moon, but he brushes her off coldly. Incidentally, the debris she is assigned to collect is the engine of the Tandem Mirror.

Hachimaki proceeds to the second round of exams in space. Having completed the EVA test with flying colors, he heads to the closed space tests with Hakim and two others in his team. Meanwhile, someone completely unexpected joins the Debris Section.

Hachimaki continues to train Tanabe. Meanwhile, one of her peers, Cheng-Shin, receives a promotion to a more glamorous division. The friends celebrate, but Hachimaki is dissatisfied: he isn’t any closer to his dream of having his own ship.

Exams for the Jupiter mission begin. Hachimaki and Cheng-Shin are at the exam venue. Tanabe, who stayed behind in the Debris Section, is worried about Hachimaki but has a difficult time establishing contact. Following the basic fitness tests and written tests, Hachimaki heads to the underwater test, where an accident occurs.

A new director is assigned to the Debris Section. He expresses his desire to shut the section down. Most of the crew is shocked, except Hachimaki, who is busy thinking about the Jupiter mission. The Debris Section sets out for its final collection mission on the Toy Box 2. The debris is a drifting spaceship with a surprise.

Locksmith, head of the Jupiter Exploration Mission, visits the Debris Section. He seems to be looking for Hachimaki’s father, Hoshino Goro, to hire him for the Von Braun exploration vessel for Jupiter. Hachimaki tries to convince his father that Jupiter is humanity’s dream, but he is uninterested. Just then, the Von Braun’s engine experiences a failure.