Sasami (Sammy...) and her brother Tenchi go to buy karaoke software for their mother... because the stores only carry Standard software, Tenchi has to resort to the black market... Biff sees Tenchi carrying another company's software and has Pixy Misa attack him... Sasami transforms into Pretty Sammy to fight against the digital monsters which Misa creates... meanwhile, Biff and Ramia plan to pull the Moon to Earth by using concentrated network power, so that Biff can build a standardized world... Washu notices something is going on when she works on her computer... she helps Sammy stop Biff's plot...