In Key West, Florida in October 1962, boys Gene Loomis (Fenton) and his brother Dennis (Lee) live on a military base (N.A.S. Key West); their father is away on a nearby submarine. After hearing the announcement of an exclusive engagement of Lawrence Woolsey's (Goodman) new sensational horror film Mant! ("Half man! Half ant!" "in Atomo-Vision and Rumble-Rama!"), including Woolsey's appearance in-person, they arrive home to President Kennedy's television interruption, stating the presence of Soviet missiles in Cuba. Woolsey finds this atmosphere of fear to be the perfect environment in which to open his atomic-radiation-themed film.