How can her benefactor's tyrannical son be making her heart flutter?

Amy was a poor child who couldn't afford to go to school, but Antonio, a generous man, comes to her aid and eventually she's risen to be a department head at the company he runs. But when his son, Rocco, takes over as CEO, her non-profit charity department is in danger of being cut. Amy wants to protect the department created by her benefactor, and that makes her forget her place and go off on Rocco without thinking. Rocco stares her down and shows that he can give as good as he gets. Amy is shaken. Even though she has to keep fighting against him after that, he makes her heart start to flutter... What is she going to do now?