Ikki Minami is a storm rider from the east side of the town. He resides with the Noyamanos, takes on gangs on his own and is in charge at his school. After suffering a crushing defeat he is introduced to the world of Air Treks, where his powers and strength are increased.
Gordon Shumway, last known survivor from the planet Melmac, crash-lands his spaceship into the Tanner family's suburban garage. Willie dubs him "ALF", short for Alien Life Form. After convincing a military officer that they are not harboring a space creature, the Tanners decide to take ALF in as a member of the family.
Synopsis copied from tv.com
As Newcomers -- fugitive slaves from the planet Tencton -- Detective George Francisco and his family face prejudice and intolerance as they struggle to assimilate to life on their adopted planet. Together with his human partner, hard-edged Detective Matt Sikes, George walks the beat in Slagtown, Los Angeles, a Newcomer slum teeming with vice and corruption. More than just another cop show or science fiction show, Alien Nation utilizes a unique and exciting blend of action, suspense, humor, and social drama to explore the sociology of what it means to be an outsider striving to fit in.