While visiting Dizzyland near Los Angeles, Klatu, Lek and Ploo, the three alien siblings from the planet Loogl, find a fuzzy little alien named Mu in the sideshow zoo of the amusement park and decide to set it free.
When their spaceship crash-lands on Earth, Ploo is captured by the Army and taken to the mysterious Area 51, and while her brothers, Lek and Klatu, try to rescue her, Ploo uses her ESP to make a new friend.
When siblings Klatu, Lek, and Loo from the plant Loogl return to the mysterious Area 51 to recover their wrecked spaceship, they meet the Great Ones - four legendary Looglings who crashed in Roswell sixty years earlier.
