Crazy Girls, Incredible Boys (1970)

Confident that he has struck a once-in-a-lifetime deal with his opponent Pantelis, successful detergent businessman Nionios thinks he has an ace up his sleeve. Now, to seal the deal, Nionios is eager to pair his beautiful only daughter Tammy off with Pantelis' handsome son, Antonis, unaware that the perfect strangers have other plans in store for their fathers. As a result, two friends, Petros and Christina, decide to do some reconnaissance on Tammy and Antonis to save the day. But, in the meantime, love takes over. What happens if they blow their cover?