The Satan Bug (1965) is a science fiction film in which a US government germ warfare lab has had an accident. The first theory is that one of the germs has been released and killed several scientists. The big fear is that a more virulent strain, named The Satan Bug because all life can be killed off by it should it escape, may have been stolen.

Following the death of his father, Lyle Bennett sets out on an extreme weight loss journey in the hopes of reaching health and happiness. His goal will push him past his physical limits and test the strength of his mental and emotional stability.