第 3 集: 九名學生慶祝首次成功造訪外星球，同時面臨內外危機。
2019年7月17日 播出
Spirits are raised and friendships are forged after the nine students successfully complete their first visit to a foreign planet. However, they are reminded that danger still lurks - in outer space, and from within the group. (Source: Crunchyroll)