All three feature-length spin-offs of the Japanese anime series 'Tenchi Muyo'. In 'Tenchi Muyo in Love' (1996), the merciless criminal Kain has escaped from his sub-space prison and has destroyed the Galaxy Police Headquarters. When Tenchi's house disappears and Tenchi starts to disappear himself, everyone travels to 1970 to save the past. In 'The Daughter of Darkness' (1997), Tenchi is surprised when a young girl, Mayuka, arrives at his home claiming to be his daughter. However, Mayuka is in fact an agent of demoness Yuzuha, who plans to revenge her 700-year grudge by forcing Tenchi into the dimension of darkness. Finally, in 'Tenchi Forever' (1999), Tenchi has disappeared and after a long search Ayeka and Ryoko finally locate him - only to find him several years older and in love with a mysterious woman.