The film is inspired by the Thai pocket-book series Sakodroychoo (สะกดรอยชู้ : "Tracking down the Adulterer") which tells the story of an adultery detective whose job it is to spy on and track down men and women who are cheating on their spouse.
Jock (Sunny Suwanmethanon) is young geek inventor who turns amateur detective in order to make ends meet. His trusty detective sidekicks are friend Jack (Chaleumpol Tikumpornteerawong), karaoke bar owner Rue-Tai (Panissara Phimpru) and a clever dog named James Bond. Their job is to work for angry wives who suspect their husbands of committing adultery.
Everything is going well until Jock lands himself in hot water when he is hired by Sawapha (Jarupus Pattamasiri) to follow her husband, police captain Wasin (Prakasit Bowsuwan), who is having affair with Nampan (Phatrasaya Krueasuwansiri). Nampan, however, is also seeing wealthy Chinese car dealer Sia Adisorn. Jock breaks the golden rule and falls in love with his target, Nampan. When he finds out that Sia’s wife, Khunying Suwimon (Daraneenuch Photipit), has hired another detective, hot-tempered Suthin (Nimit Luksameepong), to blackmail Nampan, he is outraged and decides to help her.