David, a photographer, has been married to his flight attendant wife Kanika for two years, and they live an intimate life as a couple. One day, though, David catches Kanika cheating on him with her co-worker, and spends some time apart from his wife by going to Sin Island (short for Sinilaban Island). At the beach, David sees a tattooed woman named Tasha, a fashion designer who is practicing her yoga, and the two begin an affair. Meanwhile, Kanika decides to repair her relationship with David, but finds herself in conflict with Tasha, who has eventually become his mistress.