Three teachers are on a road-trip to Monte Carlo to save their school...
King Matthias gets tired of the usual domestic tiffs, so he leaves the capital and travels through the country in disguise. His jealous wife also puts on a disguise and follows her husband to find out what he is doing.
Diversants are being prepared to destroy the military factory. Géza Torday comes as a new engineer and his appearance deeply disturbs the situation, as Toth, the director of the factory, sells goods to the West.