Kat Chastain sings for a living--sexy, sultry, come-hither songs that have her nearly masturbating on the stage for her audience. It's the gig, it's what she does. It doesn't make her a whore.
Derek Black, in love with Kat from afar, responds to her come-on fondlings like nobody's business. New hired as her body guard, he knows Kat is off limits. And even though she's too wild for him, he thinks, he's definitely considering testing that "off limits" rule.