We first see the Soja destroying an entire fleet of Galaxy Police space fighters. Afterward, a Galaxy Police lieutenant tells Mihoshi to report if she encounters Kagato. However, she misinterprets the orders in thinking she has to capture Kagato instead. Back on Earth, Tenchi and the girls go to an inn which Tenchi's family would go to every year. While unpacking, Tenchi is confronted by Ryoko who suspects a relationship with Tenchi and Ayeka.
Later in the inn onsen, Tenchi's lecherous father, Nobuyuki, attempts to teach his son the art of peeping by looking in on the women's side of the onsen. However, Ryoko is looking in on them freaking Nobuyuki out and making him pass out. Ryoko shows off her nude attire to Tenchi and teleports him to the women's side of the onsen. Sasami walks in and doesn't seem to mind Tenchi around while Ayeka is freaked about the situation until she's convinced by Ryoko to see Tenchi. As Ayeka is about to walk into the onsen, Ryoko distowels Ayeka and makes Tenchi pass out.
The two girls then start to argue resulting in Ryoko summoning a demon to attack Ayeka. Instead, the demon is out of control as Ryoko only has one gem as two are required to control major demons. The girls are being chased by the demon until Tenchi arrives with the sword, which can't even damage the demon at all. A black hole then opens up as it sucks up the demon and Mihoshi's ship. However, Mihoshi is saved by Tenchi before the black hole closes up making Tenchi free fall into the onsen. Mihoshi wakes up and winds up the victim of a joke played by Ryoko from using Mihoshi's radar watch.
At night, Sasami has a nightmare about being killed by Kagato while trying to call out help from Tsunami. As she is walking out of the house afterward, Sasami and Ryoko see the Soja on Earth as Kagato is prepared to take Ayeka, Yosho, and Sasami all for himself.