The movie starts out with Katsuhiko going to the US, with Kasumi and Yusaku seeing him off at Narita. Two years later, Katsuhiko is a professional racer, and comes back to Japan to race (and to marry Kasumi). Yusaku's hobby is photography.

In a dark corner of the universe, intergalactic criminal Kain breaks out of prison and destroys the Galaxy Police Headquarters. Basking in the afterglow of the terror and destruction he has caused, Kain sets his sights toward a much bigger prize waiting on Earth. Meanwhile, Tenchi Masaki and his crew are watching some old home videos of his mother, Achika. As the film rolls, Achika slowly starts to vanish. While watching her fade away, Tenchi also begins to disappear. However, thanks to a device created by Washuu Hakubi, Tenchi is not gone for good. The gang soon learns about Kain and deduce that he must have done something to Achika, which has resulted in time being altered. To save himself and maintain the future, Tenchi travels with the girls back in time to protect his mother from her fate.

When mundane office worker Kiyoshi Adachi turns 30 years old, he discovers that he has gained the ability to read minds due simply to remaining a virgin for his entire life. The caveat, however, is that he must make physical contact with a person to know what they are thinking about. Adachi believes there is no real use for this power until he accidentally hears the thoughts of his coworker, Yuuichi Kurosawa. Charismatic and dependable, Kurosawa is the star of Adachi's team at work, earning praise and admiration from everyone at the office. But deep within, Kurosawa harbors an intense one-sided crush for the gloomy Adachi—a fact that Adachi only learns because of his ability, and knowledge he tries to respectfully disregard. As Kurosawa treats Adachi with kindness and affection he has never experienced before, Adachi finds it increasingly difficult to ignore his coworker's genuine advances.