The Ultimate Vampire Resource and Directory

Faced by destruction, the people of Earth build a multi-generational starship. The ship contains dozens of isolated, self-contained biospheres, each a kilometer across and housing people of different cultures. Early in the voyage, however, disaster strikes, and the command section is destroyed along with its crew.

Centuries later, a young man, Devon (Keir Dullea), a resident of a biosphere with an Amish-like culture, discovers that his world is far larger and more mysterious than he had realized. He inadvertently finds his way into the service areas of the ship and uncovers its fate: the Ark is on a collision course with a Class G star similar to the Sun. Devon and his fellow escapees Rachel (Gay Rowan) and Garth (Robin Ward) must learn all they can about the Ark if they are to save it and the colonists aboard. Occasionally, they are aided by the ark's computer systems portrayed by William Osler.