Skuld sees a flurry of bugs in the Ultimate Force System and investigates.  When she sees that they all center around Belldandy, her big sister, she heads to Earth to get her to return to Heaven.  When confronted about a machine that Skuld had invented that would zap all the bugs, Skuld has to admit that she can use it.  Just before starting up, Urd smacks a bug into the machine, destroying it.  Later, after Belldandy finally agrees to return home, Skuld realizes how much she want to stay with Keiichi.  She repairs the machine with Keiichi in order thay she may stay.