Fantastic Voyage is a 1966 science fiction film directed by Richard Fleischer and starring Stephen Boyd, Raquel Welch, and Donald Pleasence. The film follows a team of scientists who are miniaturized and injected into the body of an injured scientist in order to save his life. The term 'Fantastic Voyage' refers to the journey taken by the scientists as they explore the human body. The crossword solution for the term is QUEST, which can be interpreted as the mission undertaken by the scientists to save the injured scientist.