Alien life, home-built computers and exciting books — these are what interest Lisa. She’s different from everyone else, always feels alone, and thinks it’s her own fault. To escape her incompetent parents and the mean kids in the playground, she retreats into her own little world, which is suddenly knocked sideways…

Having missed his spaceship back home, Klakalnamanazdta is stranded on Earth, of all places. Lisa discovers the alien, takes him in and names him Walter. Walter turns Lisa’s life upside down and shows her the beauty of true friendship.