The news that all parents dreaded during the Vietnam war reaches a suburbanite couple (John Marley and Lynn Carlin) when they learn that their son has perished and will not be returning home. Grief stricken, the couple find the news hard to accept. Good news occurs a few days later, however, when their son returns home, seemingly unscathed from battle. But when he starts displaying zombie-like tendencies, it appears that he's not dead--he's one of the UNdead... Featuring the special effects debut of the legendary Tom Savini, this potent zombie film from Bob Clark (BLACK CHRISTMAS, A CHRISTMAS STORY) was also one of the first movies to tackle the subject of the Vietnam war.