Na Tang Si Chomphu Pratu Si Fa

A Warm Beginning Nol (Toon Hiranyasap) and Ketkaew (Chanana Nutakom) lead a happy, warm life in the countryside with their two children: Chomphu Phrae (Ae Isariya Saisanan) and Fa Sawang (Nong Plub Juthaphat). Despite their age gap and different genders, the two siblings are incredibly close. However, their peaceful lives change when Nol, an insurance agent, is transferred to the Bangkok branch, while Ketkaew is sent by her company for a year-long training program abroad. They decide that Ketkaew should go, while Nol takes on the responsibility of raising the kids alone in the city. Before leaving, Ketkaew tasks Chomphu with being her "eyes and ears" to look after her father and younger brother.
Life in the Big City In Bangkok, they move in with Pa Thongmuan (Duantem Salitul), Nol's strict and cranky elderly relative, and her scatterbrained maid, Sali. From day one, Chomphu and Fa struggle with the aunt's "iron rules." Next door lives Lung Sawai (Yao Ayutthaya), a flirt who has been chasing Pa Thongmuan for decades, and his niece Praew (Pimpaka Siangsomboon), a charming flight attendant who immediately begins flirting with Nol. This sparks heavy resentment from Chomphu, though the kids eventually become friends with Lung Sawai and try to help him win over their grumpy aunt.
New Friends and Troubles

• Fa’s Gang: Fa joins a local bicycle gang with friends Tony, Nok, and Phap. They get into various antics, like stealing mangoes from a grumpy newcomer named Somchai and tricking Lung Sawai into buying Pa Thongmuan's snacks so Fa can save up for a bike. Eventually, the four become best friends.
• Chomphu’s Heart: Chomphu meets Perntaw (Pukai Pongsiri), a handsome guy who makes her heart flutter. She volunteers to work at a horse stable just to be near him, using the excuse of earning extra money to tell her father.
• Nol’s Work: Nol faces immense pressure at his new job. Influenced by a colleague, Prasit, he starts coming home late. Chomphu grows suspicious, especially as Nol spends more time with Praew under the guise of selling her insurance.

School Life and Rivalries School brings new challenges. Fa discovers that his classroom teacher is the strict Kru Wilai, and the "grumpy mango owner" is actually Kru Somchai, the school disciplinarian. Meanwhile, Chomphu faces off against Bebe, the school's popular girl. To make matters worse, Perntaw is infatuated with Bebe. Only Pan, Perntaw's best friend, shows genuine interest in Chomphu.
Fractured Relationships The family dynamic begins to crumble. Perntaw asks Chomphu to deliver a love letter to Bebe; heartbroken, Chomphu hides the letter and lies about it. When Bebe realizes Chomphu likes Perntaw, she dates him just to spite her. Perntaw, blinded by infatuation, ignores Chomphu’s warnings about Bebe’s insincerity, leading to a major fallout between the two friends.
At home, Nol is exhausted by work and neglects the children. Chomphu becomes withdrawn, and Fa, distracted by his gang, begins to fail his classes. Though Pa Thongmuan tries to intervene, her nagging only drives the family further apart.
The Breaking Point Desperate to make Perntaw jealous, Chomphu begins dating a student named Phet, who turns out to be dangerous. Meanwhile, Fa hides his failing grades from everyone. When Nol eventually finds out, he loses his temper, hits Fa, and burns his books. Devastated and feeling hopeless, Fa runs away from home.
Seeing the family in ruins, Pa Thongmuan calls Ketkaew, who immediately quits her job abroad to return to Thailand.
The Climax Fa and his friends accidentally witness a drug-dealing gang while hiding out. Thinking they can redeem themselves by being "heroes," they try to report the gang but are captured. Simultaneously, Phet attempts to "sell" Chomphu to a thug named Danny to pay off gambling debts, but Perntaw and Pan arrive just in time to save her.
Learning that Fa is missing, everyone rushes to find him. Nol leads the police to rescue the boys but is injured in the process.
A Final Realization At the hospital, Ketkaew arrives to find Chomphu, Fa, Perntaw, and Pa Thongmuan waiting anxiously outside the emergency room. In that moment of crisis, the family finally understands the depth of their love for one another and the vital importance of communication and time.