What is the ruling of Islamic law regarding marriage to another woman whom the first wife rejects, and whom the parents reject because she is a foreigner and her profession is incompatible with the family's standing?

You must obey your parents in not marrying this woman, as long as no harm befalls you from doing so. It appears their refusal is not arbitrary, and obeying them in what is good is among the most obligatory duties and a cause of success.