We are introduced to the four main characters Pu, Ngoh, Duean, and Pam and their different family backgrounds. Pu lives in Kanchanaburi and wants to move to Bangkok to live with her mother while Ngoh's family just moved to a different part of Bangkok to open a new shop. Duean and Pam live in the poorer neighborhoods within Bangkok where Duean's father works as a construction manager and is looking to buy a new house. Pam's father is a police officer and her mother has a gambling problem.

Duean visits her father at the hospital while Pu moves to Bangkok to live with her mother and her new husband. Ngoh's father is wary of his wife as she seems a bit too friendly with the customers. Duean's father's condition worsens and Pam's mother continues to gamble.

Things get heated with Pu's family as her mother starts to show signs of favoritism towards her younger children and Duean's mother receives bad news. Pu and Ngoh meet for the first time at school and Pu meets Joe and Pam at the mall.

Duean's mother finds a job as a dishwasher at a nightclub where she is faced with a difficult decision. Ngoh's father attempts to reconcile with his family by taking their family out for dinner. Duean applies for a job at a local café to help her mother with Pam joining her. Pu feels like an outcast in her own home, with her mother always favoring Lookmoo and Pom. The senior who likes Ngoh is persistant and steals her and Pu's bags and Pu gets annoyed. Pu gets caught smoking at school while Ngoh voluntarily takes the blame.

Pu comforts Ngoh and Yok returns home to his disapproving father while his mother excitedly asks him how his audition went. Ngoh returns home and asks her mother where she was. Duean's landlord sees her mother at the nightclub and Pu goes out with Louis again, trying marijuana for the first time. Ngoh is disappointed with her mother's dishonesty, and Mangkood comforts her. Duean's neighbors call her mother out for being a prostitute and they get into a fight with Pam, Joe, and Duean, ending up with them going to the police station. Pu's mother stays with Lookmoo at the hospital while Wasan and Pom are at home with Pu. Pu's life is drastically upended after returning home and Duean's mother is forced to sleep with the landlord to pay off her rent. Pu goes to school and starts thinking recklessly, with Ngoh being concerned for her safety.

Ngoh comforts Pu after she vents to her. Duean is also consoled by Pam after telling her about her mother's profession and starts to do things in spite of her mother. Pu becomes desensitized and starts taking drugs to numb her pain. After being admitted to the hospital, she goes to live with Louis and Ngoh becomes concerned. Ngoh ditches school and asks Frank for help in finding Pu.

Ngoh doesn't return home for the night and faces punishment from her father. Pu returns home wasted, trying to confess to her mother who won't believe her. Pam's father hits her mother after she gambled away some of their possessions. Pu, Ngoh, Duean, Pam, and Yok ditch school to go to a zoo and the beach.

Pu misses school again and Ngoh goes looking for her at the arcade. Duean doesn't show up at work and goes to a different job which makes her mother suspicious. Yok prepares for his dance competition happily but his father locks him in his room, refusing to let him go. Pu, Ngoh, Duean, and Pam trespass into a closed bowling alley and are caught. Pu, Pam, and Ngoh are punished by their parents and Duean confides in Pam.

Pu is kicked out of her house and is forced to find a new place to live. Yok runs away from home and rents out an apartment with Pu. After going to a party, Ngoh returns home drunk again, her father furiously waiting.

Pam decides to do something drastic and Joe tries to stop her. The police continue to crack down on illegal drug dealers and are closer to finding out about Louis. Ngoh becomes wary of Frank and Yok has a shocking revelation. Duean confronts Pam about what she was doing. Pu and Yok go back to their houses to find money to buy more heroin.