It is based on a novel by Utsana Phloengtham and follows the titular character as he attempts to break free from the cycle of sex and abuse perpetuated in his wealthy household while fulfilling his own pleasures and desires.

Jan Dara is a boy growing up in 1930s Siam in a wealthy, dysfunctional family where sex has a huge impact on everyone's lives.

Jan is viewed by his father, Khun Luang, as cursed, since his mother died giving birth to him, and he is relegated to doing servant work in the house as a result.

The teenaged Jan befriends Khen, the son of the family cook, who has begun a secret relationship with Kaew's nanny Saisoi.

He also falls in love with and pursues Hyacinth, a student he encounters and later escorts to her home daily after she finishes school.

Kaew has become pregnant and Jan is forced into a loveless arranged marriage with his sister so that the damage to the family's reputation is smoothed over.

During his wedding to Kaew, Jan impulsively has sex with one of the family's maids in front of the portrait of his mother, with him coming to terms with the fact that he has repeated Luang's promiscuous and abusive ways.

Luang, already crippled from old age and impotent after feeling guilty about getting his daughter pregnant, witnesses Jan have sex with Boonlueang and falls into a catatonic state.

Chung says this garment hurt her considerably on the set, explaining rather graphically how the grinding of its fabric against her skin caused friction burns during the more frenetic moments of simulated passion.