Shane gets hired to test women’s fidelity and, most of times, her charisma and charm make the victim give in.

Shane has been testing girls for five years and, doing so, she has progressively lost sensitivity and ability to love. She just gets laid, and rarely feels something.

Until Melissa Coles Smith hires her to test her longtime girlfriend’s fidelity.

Melissa’s fiancée is Carmen Morales, the talented Account Manager for ApplePie’s Advertising Agency.

Shane hires Carmen in order to have DEW’s promotional image renewed and they plan an advertising campaign for the club.

Carmen is not only talented, but also stunning. She’s the most beautiful woman Shane has ever laid eyes on and Shane feels immediately, genuinely attracted to her. The attraction is reciprocated and, for the first time in her seven-year relationship, Carmen feels truly tempted to cheat on Melissa.

What had started as a simple job, slowly becomes something much more personal for Shane. She feels romantically involved with Carmen and starts courting her for real. She doesn’t have the courage to tell her about her true job, though.

Finally, Carmen decides to split up with Melissa and to surrender to what she feels for Shane. The two make love, declare to each other and everything seems perfect. But when Shane finally confesses the truth, Carmen is shocked and leaves Shane’s apartment.

Desperate and unable to deal with her own pain, Shane has sex with a former lover, Cherie Jaffe.

In the meantime, Carmen and Helena share a heartfelt conversation and Carmen finally discovers many of the reasons of Shane’s apparent inability to love. She goes rescuing an upset and almost overdosing Shane at Jaffe’s beach house.

The two start again and, rapidly, their friendship turns into a romance one more time.

Melissa Coles Smith hasn’t taken well the end of her relationship with Carmen, and becomes more and more dangerous and threatening against her former girlfriend and her new partner. Firstly she steals documents from Shane’s archive, then she beats Carmen, and finally she threatens her professionally.