Dr. Jamison misinterprets a rush call to the children's zoo, believing his patient is a child, and runs into a series of misadventures with a chimp.

Puni gets arrested, seems she and some other women are trying to protest pollution, caused by the empire of Lady Whittaker and the women manage to get Sean arrested too. Then he meets Lady Whittaker, who turns out not to be British but an islander, and love blooms.

Dr. Sean Jamison discovers that kicking a bad habit can have humorous as well as frustrating results. Sean finally convices Alfred's father to set a good example and stop smoking. Then he has to kick the habit himself when some of his little patients stage a smoke-in.