Startica is the Summer Festival on Jurai. Many years ago, Tenchi's grandfather, Yosho, met a young girl during Startica and just as their relationship blossomed, she was attacked by the Jurai Palace who revealed that the girl was Yuzuha - the Demon of Darkness! Wounded by the attack, Yuzuha fled, but many years later her feeling of betrayal lead her to plan her revenge by taking Yosho's only grandson; Tenchi! On a hot summer day, a fetching young girl named Mayuka appears to Tenchi, calling him Daddy! Jealousy and envy follow as Ryoko and Ayeka battle for Tenchi's attention with an apparently new rival. Who could the mother be?!
A definitely different take on Tenchi Muyo. The only other time we see Tenchi as "daddy" was when Ryoko was trying to make Ayeka jealous. Mayuka is an interesting chara who it was a shame to see turn even more bad than she was. Ryoko's concern/suspicions were well placed in being worried about this new-comer... I would recommend this movie :)