Flash used to be a talented baseball player, but he took to drinking and now he sells stolen watches in the streets. One day he meets Chu Chu, who, before falling into alcoholism like him, was a successful entertainer. Now she still dances, but in the streets, for no more than a cent or two. Luck seems to smile at them the day stolen government documents literally fall from the sky. They decide to return them to their legal owners, but instead of the expected reward money, all they get is a load of trouble.

An Italian mechanic finds that he has inherited a billion-dollar company from his dead uncle, but he needs to be in San Francisco in 20 days to sign over the will. In the meantime, he is chased by kidnappers and the affected corporation's president.

People in the future live in a totalitarian society. A technician named THX 1138 lives a mundane life between work and taking a controlled consumption of drugs that the government uses to make puppets out of people. As THX is without drugs for the first time he has feelings for a woman and they start a secret relationship.