¡Vaya par de gemelos!(1978)

Overview:

Pedro and Lucas are two twin brothers, residents of Tarazona, whom fortune smiles very differently. Luke is married to the owner of a modest supermarket and works as dependent, porter and whatever is needed ... Moreover, unlike his brother, he has never left the village. Instead, Pedro is married to the richest chocolate maker in the place, lives like a king and often travels to Madrid. But to justify his travels he has invented an illegitimate son who lives there studying architecture and that his wife wants to protect, giving him all the money he needs. The plan goes perfect until love complicates things.