When siblings Klatu, Lek, and Ploo from the planet Loogl return to the mysterious Area 51 to recover their wrecked spaceship, they meet the Great Ones--four legendary Looglings who crashed in Roswell fifty years earlier.

After crashing their spaceship in the Nevada desert, Klatu, Lek, and their sister Ploo go to Las Vegas in search of the one mechanic who can fix it.

When Zack goes to a store to buy a baseball card, he finds himself face-to-face with his future son who has traveled back in time.

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.

Zack goes on a class trip, gets an insect bite, and suddenly can't speak a single word that isn't in rhyme. Talking like a modern-day Shakespeare may be fun at first, but not when he can't turn it off.

After a class trip to see the Neanderthals, Zach gets locked into the Rosencrantz Museum on the night of the new moon, the one time of the month when the prehistoric people and animals in the exhibits come to life.

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.

In his 28th film, Elvis Presley plays frazzled photographer and playboy Greg, who holds two simultaneous jobs--one for the publisher of a girlie magazine, another for an adman--while also contending with the kooky attentions of a beach beauty. Four songs, including "A little less conversation" and the "Edge of reality" dream sequence, add to the zippy fun.