Hachimaki hauls orbital debris in 2075, crewing the small collector DS-12 'Toy Box' for the Debris Section of Technora Corporation. Decades of space junk now threaten every ship and station around Earth, and clearing it is dangerous, low-status work. He does it beside the chain-smoking Fee and the quiet Yuri while dreaming of a spacecraft of his own, until the arrival of earnest rookie Ai Tanabe reshapes the crew as she adjusts to life, work, and grief in the vacuum.