Nice guy Kio’s life gets turned upside down when he meets a friendly, sexy cat-alien named Eris! She’s on a peaceful mission – but things could get dangerous, thanks to all of the secret agencies trying to get close to her.

When Eris is taken captive by one of the many secret organizations on her tail, Kio springs into action and organizes a rescue attempt. Of course, with alien technology at her disposal, Eris might just be able to take care of herself.

Labeled traitors by their former organizations, Manami and Aoi take refuge in the new embassy of Catia – Kio’s house! The girls discover they aren’t out of hot water just yet, though, when an intruder attempts a bath time raid!

Aoi and Manami undertake a high seas raid to free Kio and Eris from Antonia’s lavish – and heavily armed – yacht. The battle is intense, and Aoi is left unconscious in the belly of the ship. Can Kio get to her before the vessel sinks?

Kio and all his family members gather for a funeral in Okinawa; this same day, a message arrives from outer space, there, he encounters a girl named Elis who claims to be an alien.