A few years after a one night stand, a married man discovers that the woman from that night is now getting married to his best friend.

A gun fires and supermodel Lily Sampson is dead. Two cops, Clark and his new partner Allie, are on the case. Their only clues are a revealing videotape of the victim in a searing game of bondage with a famous fashion photographer, and Lily's high school yearbook which reveals a mysterious twin sister and clues to a lifelong rivalry with another model.

Matthew is young and ambitious, a businessman already achieving success. Although he is experienced in the matters of sex, he was never prepared for Valerie. She is a revolution in all matters of emotion and sex that Matthew believe he knew. He becomes obsessed with her and that will lead to his own downfall.

Ben and Jeff are about to take their successful Internet startup company public and hit the jackpot for which they have been working so diligently. Ben is dating a beautiful yoga instructor named Caitlin, while Jeff is seeing Sara, an ambitious model. However, the men decide that they are suspicious enough of their respective girlfriends' intentions to set up a little test of their fidelity, and each sets out to seduce the other's lover.