Pecados de una Profesora (The Professor's Sins) follows Mayra Beltran, who lost the love of her life in a tragic accident. From then on, she took refuge in the bitterness and the loneliness. But the destiny gives her a new opportunity to discover the force of love and passion in the arms of a young boy, Abel. A huge passion develops between Mayra and her inexperienced lover. The age differences do not matter until Mayra discovers that the boy is one of her students. Things get worse when Abel's ex-girlfriend decides to do all that is possible to rekindle their love and to separate him from the arms of the sensual and attractive professor.