Greetings, earthlings. A pint-sized extraterrestrial has just landed on our planet by accident-and he's feeling a little alienated because he got separated from his family upon arrival. Fortunately, the hilarious, intergalactic antics of this Mysterious Alien Creature (MAC) will help him charm his way into the heart of everyone he meets, including Ronald McDonald in a rare cameo! As far as best friends go, MAC makes a pretty good one. He has a gentle disposition and a terrific sense of humor. But for new-kid-in-town Eric Cruise, the problem is that no one will believe that his fun new friend even exists. Everyone thinks it's all science fiction until MAC comes out of hiding and takes Eric, his family, his neighborhood and his world on a fantastical journey that will transform their lives...forever!