The Novas, a family of space explorers make an interstellar discovery that will change the course of history when they chance across an alien space craft and its ethereal substance - Star Dust.

Continuing their search for Star Dust aliens, the Novas discover an uninhabited planet - but when they fall through quicksand to the caverns beneath, they soon discover it isn't uninhabited at all!

Sol attempts to win the science fair by sabotaging all the other projects including Jet and Adelaide's half plant, half animal. But Sol's actions cause chaos and reveal an alien may have been to Luna Port!