Mala conducta (2008)

Pelayo Bobadilla is an outgoing teacher, loving husband and exemplary father, who works with his charming wife Amelia and their three children at the two-for-one institute. But Pelayo's perfect life turns upside down when he meets Flavia Inostroza, the sister of one of his pupils and infamous secretary, who is willing to do anything to hunt down a man who will get her out of her precarious economic situation.