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.

Pu starts smoking and becomes friends with Ngoh. Duean comes up with a way to help support her family and help pay for her father's medical bills. At Pam's house, her father chastises her mother for her gambling problem while Ngoh's father lashes out at her mother. Pu grows more and more distant with her family and develops a little crush.

Duean's mother searches for a job to pay off her husband's hospital bills while Ngoh and Pu become closer. Ngoh and Pu meet up with Duean and Pam at the mall where they meet a waiter, Frank, who has taken a liking to Ngoh. Pu and Pam also meet Yok for the first time and Pu goes on a trip with Louis. Ngoh's father becomes more wary of his wife and uses alcohol to cope. He starts to get aggressive with her and Ngoh attempts to intervene. Pu's mother chastises her for going out late, making her feel more and more distant.

Ngoh struggles to cope with her aggressive alcoholic father while Pu continues to smoke more and more. At school, Pu and Ngoh prepare for their performance while Ngoh's senior admirer attempts to win her over, leading to a jealous freshman confronting Ngoh. Duean confides in Pam as she desperately wants to help her mother out. Pu introduces Louis to Ngoh and goes on a trip with him and Louis's backstory is introduced. Duean's mother continues to struggle to pay for her husband's hospital bills along with her other loans.

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.

Ngoh and Pu are punished by their parents for smoking and have a parent-teacher conference at school. Pu goes on a trip with Louis after the conference. Pam starts to get tired of her job at the café and Ngoh starts taking more pills to help her sleep better. Pu and Ngoh go to Frank's café to do a project with their classmates and Frank flirts with Ngoh. At home, Ngoh's father reprimands her for going out too late, thinking that she went out with her friends that are bad influences instead of actually doing her project. Frank is seen to be a cheater and sleeps around a lot. Pu, Pam, and Ngoh go watch Yok's dance performance at the mall while Duean continues to work at the café. Yok reveals that his father forced him to cut his hair short and Ngoh makes a shocking revelation.

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.

Pu returns home drunk with her mother scolding her. Ngoh also returns home drunk, her father hitting her, drunk as well while her mother and sister fearfully listen. Louis's job is revealed, with the police searching his house. Frank takes Ngoh to a pet shop and adopts a dog for her. Duean tries a new job and Yok confronts a senior he likes at the mall.

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.

Ngoh shows up at Pu's door after being hit by her father. Pam's father finds Pam passed out in front of his house and handcuffs her to the gate. Yok's mother goes looking for him while his father is nonchalant. Pam runs away and moves in temporarily with Pu and Yok. Duean's mother starts to grow more suspicious of Duean.

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.