Returning from a steamy excursion with her lover, Hee Ra finds her husband dead in her bedroom. Although Hee Ra has a solid alibi, detective Min Ho’s intuition points to the wife as the murderer. In search of evidence, the detective begins to observe her daily routine, but gradually he is spellbound by her irresistible charm. Then another suspect appears, someone from Hee Ra’s past, whom Min Ho believes to be the culprit. Seeing the closure of the murder case, Min Ho and Hee Ra become closer than ever. But past secrets reveal themselves, taking Min Ho to the point of no return…

Film director Jin Young walks out the door after presenting a screenplay that he hopes will be turned into a film. On his way to the parking lot, he meets an attractive woman named In Ae and spends the night with her. Next day, he receives a phone call from Sang Ho, a producer whom he has not heard from for the last three years. Jin Young meets the producer, who's now confined to a wheelchair after a hit-and-run incident. Distraught by his wife's infidelity, Sang Ho asks Jin Young to shadow her, cathing her affairs on camera. Shockingly, the wife turns out to be In Ae, and Jin Young now faces a dilemma...

Young Hoon, a nude photographer, and Jung Im, a food stylist are both successful in their respective professions. Having dated for seven years before getting married, they’re more like friends than lovers. Due to the nature of her husband’s work, Jung Im occasionally feels insecure in her marriage, though this long-married couple has trust in one other. One day, Young Hoon befriends a neighboring couple, Hyun Chul and Hyo Jin. Next to the authoritative husband, Hyo Jin looks quite unstable and insecure and Young Hoon cannot help but feel drawn to her sadness. But the more he falls for Hyo Jin, the deeper his trouble becomes…

A popular surgeon with a bright future and women falling at his feet, Ji Hoon is at the top of the world. Although married, he fantasizes of a woman with a butterfly tattooed on her pelvis - a vision from his reccurring dreams. During a business trip, he meets an attractive woman named Hae Young, who coldly refuses his advances. Not accustomed to such rejection, Ji Hoon smiles as he heads back home. A few days later, he receives an unexpected call from Hae Young, and begins a risky affair. But soon afterwards, his wife receives a mysterious package containing incriminating photos of her husband…