Arnold Schwarzenegger protagoniza a un policía encubierto, que se hace pasar por un maestro de guardería para atrapar a un peligroso criminal. Tras haberse ganado el cariño de los niños y el afecto de una preciosa maestra , se prepara para el momento decisivo con la presa deseada en esta comedia de acción tan divertida del director Ivan Reitman.
The name Michael O'Hara has become synonymous with law enforcement. There have been three generations of Michael O'Haras and all have been exemplary policemen. When Michael O'Hara III's child was born he was told that they would not be able to have any more children, and there has always been a Michael O'Hara, so he named his child Michael O'Hara IV despite the fact that she is a girl. Now Mike has a tendency to get involved with police matters and not always with good results, which annoys her father. And despite being told repeatedly to stay out of it, she continues her amateurish detective activities.
El científico nazi Heinrich von Kronen es reclutado por Louis Strago, un alto oficial de la organización TRUSH, para construir una serie de misiles nucleares y lanzarlos cerca del polo norte, alterando de ese modo el clima de todo el hemisferio norte y transformando a Norteamérica en un continente helado.
