The Secret Service abducts a "rocket scientist" to better protect him against gangsters acting for Chinese agents.

A very faithful Jewish man works making diamond dust in his family's workshop, to sell to industries. One day he goes on businnes trip. In the same train goes a very sexy girl, with some heroin bags (you guess it) very similar to the diamond bags. The police begins to chase the girl, and she hides the drug into the Levy's bag. The girl calls his boss ('Goliath') the situation and he and his band begins to hound Levy, who, by this time, selled the bags to a factory, not knowing the content. He has to get out of the problem with the help of his brother and his God.

Bernard, a young, serious publisher of religious books, finds himself embroiled in amusing and eventful adventures with Sophie, a wacky twist dancer. Having lost his own situation, he joins Editions du Soleil thanks to his friend Marcel's manuscript "Comment réussir en amour". Freed of his shyness, he succeeds brilliantly in his career; and having put to good use the teachings of the manuscript, Bernard ends up marrying Sophie. But he soon finds himself confronted by the impetuous young woman's fantasies.