Tenchi Muyo: Tenchi In Love the movie (DVD) (Japanese Animation)

The merciless criminal Kain has escaped from sub-space where he has been captured! Kain, who was deprived of his freedom by the Jurai royal family and GP (Galaxy Police), has demolished the GP headquarters and attacked the Jurai King. His next target is earth! Around the same time on earth, Tenchi’s house has suddenly disappeared. What’s even worse is that Tenchi’s body is disappearing too! Something must have happened in the past to Tenchi’s mother, Achika! So the gang must now leave for a journey to the year 1970.