Louis Warren is a committed bachelor, with no plans to marry, let alone have children. As a police chief, his daily exposure to the dangers of the world has convinced him that it's too unsafe to raise kids. However, his grandmother doesn't share that view—her greatest wish is for her grandson to give her great-grandchildren and take over the family business. Diana Taylor is a sweet and charismatic young woman who lives with her father and brother. She works as a cleaner at an elite school for wealthy children. On the same day she gets fired, she meets the police chief, Louis, who, at the insistence of his niece, is forced to offer her a ride. However, their journey takes an unexpected turn when they end up in the hospital after an accident involving Warren's grandmother. The clever elderly woman quickly takes a liking to the sweet Diana and devises a secret plan to fulfill her dream of having great-grandchildren. The catch? No one is aware of her scheme—until an unexpected pregnancy brings it to light.