The Mellop kids try to use their father's new fax machine to invite the Moonlings to the nursery's relaunch party but the signal is intercepted by the Grubs, a ravenous alien species who have just invaded Peaceful Planet. Harmony and her cousin Darren have swapped homes for the holidays. Darren helps the Mellop kids log on to a pan-galactic bulletin board where they make contact with Ebony. She appears as a hologram in the Mellop's dishwasher and warns them about the destructive Grubs who are on their way to Earth.
