An advertising man is slowly sliding downhill. When he is fired from his job in Detroit, he signs up for unemployment. One day they find him a job: teaching thinking skills to Army recruits. He arrives on base to find that there is no structure set up for the class.

As America's stock of athletic young men is depleted during World War II, a professional all-female baseball league springs up in the Midwest, funded by publicity-hungry candy maker Walter Harvey. Competitive sisters Dottie Hinson and Kit Keller spar with each other, scout Ernie Capadino and grumpy has-been coach Jimmy Dugan on their way to fame.

When a young boy makes a wish at a carnival machine to be big—he wakes up the following morning to find that it has been granted and his body has grown older overnight. But he is still the same 13-year-old boy inside. Now he must learn how to cope with the unfamiliar world of grown-ups including getting a job and having his first romantic encounter with a woman.

In 1965, a young woman with dreams of becoming a writer has a son at the age of 15 and struggles to make things work with the drug-addicted father.

Dr. Malcolm Sayer, a shy research physician, uses an experimental drug to "awaken" the catatonic victims of a rare disease. Leonard is the first patient to receive the controversial treatment. His awakening, filled with awe and enthusiasm, proves a rebirth for Sayer too, as the exuberant patient reveals life's simple but unutterably sweet pleasures to the introverted doctor.