A young girl is cast for a musical comedy, but she refuses after her father doesn't let her play in it. After that, more offers emerge, along with a hit song dedicated to her from a infatuated admirer.
An old geriatrics professor accidentally discovers after a high-school reunion a potion that can rejuvenate anybody and uses it on him and his friends. They all go their new youthful ways but, for most of them, things don't go according to plan.
