This detective story about three women who humiliate men. An accidental mishap reveals the spying activities of Pál Kovács, a foreign trader. The investigation is made more difficult by Kovács' persistent silence.The trail leads to his girlfriend, Éva László, an OTP employee, against whom an unsuccessful assassination attempt is made. In prison, Kovács' life is in danger. The investigation brings to the fore a gang of spies who are about to leave the country, but the gang's boss "Bimbó" keeps them in hand so that he can be the first to make his move.