An American soldier who had been killed during the Vietnam War is revived 25 years later by the military as a semi-android, UniSols, a high-tech soldier of the future. After the failure of the initiative to erase all the soldier's memories, he begins to experience flashbacks that are forcing him to recall his past.
Sam and George strike gold in Alaska. George sends Sam to Seattle to bring George's fiancé back to Alaska. Sam finds she is already married, and returns instead with Angel. Sam, after trying to get George and Angel together, finally romances Angel, who, in the meantime, is busy fighting off the advances of George's younger brother, Billy.
Ten years after a band of mercenaries first battled a vicious alien, the invisible creature from another world has returned to Earth -- and this time, it's drawn to the gang-ruled and ravaged city of Los Angeles. When it starts murdering drug dealers, detective-lieutenant Mike Harrigan and his police force set out to capture the creature, ignoring warnings from a mysterious government agent to stay away.