Shopgirl Polly Parrish (Ginger Rogers) finds a baby on a founding home doorstep. She takes the baby into her care, but has a difficult time convincing anyone that that the child is not hers. Polly's boss thinks his son is responsible, and the son (David Niven), more perplexed than anyone, tries to help out with haphazard feeding advice. A delightful screwball comedy classic set during the Christmas season.