Hina has been acting strange lately. The time to send her back to her maker is close at hand, and the others think this may be why she's not herself lately. If it's true, then a battle must commence to decide who is the strongest before she departs.
The evil Shinki Cloudy rules the underground empire that is home to rogue Shinki. Lene swears that she will help the Liberation Army fight for freedom, while searching for her master's missing rice ball.
One day, Ann wakes up as a human. When Rihito sees her pouting in the park, he decides to do the gentlemanly thing and help her out. Meanwhile, Ann's Shinki body has been infected by a potentially fatal virus.
Ann and the rest of the Shinki prepare for a trip to Okinawa with their Master, who unfortunately leaves them behind while running late. The girls then decide to make their way to the small island in search of fun and sun.
Lene and Ines are on the outs, and their master has the itch to travel. A race around the park promises a trip to Okinawa for the winning Shinki and their master. Ines and Lene enter, as well as a few surprise entrants.
Ann, Ines and Lene are three Shinki with a problem. After helping their master move back to his home to start high school, they find a box labeled "important." Everything is going well, until they somehow accidentally pierce the box with a knife.
Because it's never too early to plan Thursday night... two months from now.