Original: ลูกผู้ชายหัวใจเพชร
A gifted, humbly born musician and a wealthy student fall for each other amid personal rivalries and a life-changing accident.
Petch, a musician whose father wants him to give up his dreams, finds a kindred spirit in Dao, a wealthy student whose family has planned out her life.
While Dao's friendship with Petch blossoms despite their differences, Nop's lack of support for his son's dream strains their relationship.
Dao's suitor Akekaphol interferes with Petch's school life. After being robbed, Nop scrambles to find a way to pay for his son's school fees.
Petch complicates things with Dao when he brushes off her friends. Damrong sets out to avenge his friend's expulsion from school.
An accident lands Petch in serious trouble and forces him to cut ties with the people he loves. Meanwhile, Dao prepares to move abroad.
Far from home, Dao rejects Akekaphol's advances as she longs to see her friend. After rescuing Berm from a fire, Petch forges a friendship with him.
After returning home, Dao showcases her talents and secures a job with Akekaphol's uncle. Damrong's sister, Sai Kaew, helps him and Petch make rent.
Dao's mother pressures her into considering a long-term relationship with Akekaphol. Meanwhile, Petch and Damrong take a gig at a new pub.
Dao convinces Akekaphol to hire a new resident musician for his pub. Later, Petch encounters a man who harbors a deep grudge against him.
Hell-bent on avenging his boss, Bank stumbles upon an unlikely ally who'll help his cause. Elsewhere, his son ends up in danger and needs rescuing.
Moved by Petch's kindness toward his son, Bank switches sides and exposes Akekaphol's schemes, allowing Dao to see her fiance's true nature.
Akekaphol enlists the pub manager to monitor Petch's behavior. Meanwhile, Dao offers to help Nop heal his relationship with his son.
Akekaphol's efforts to ruin Petch's budding music career backfire, and he grows even more resentful when Sompob reprimands him for being unprofessional.
Petch disregards Damrong's advice to attend an audition and instead lets Akekaphol's insults get in the way of furthering his career.
Akekaphol tries to involve Sai Kaew in his manipulative scheming. Meanwhile, Dao takes control of Petch's career, straining their relationship.
Akekaphol turns to a conniving old friend to help him plot Petch's downfall. Elsewhere, Nop feels ashamed of his occupation and leaves home.
Akekaphol infiltrates Sompob's business, while Sai Kaew's enthusiasm over Petch's new recording opportunity makes Dao misinterpret their relationship.
Petch writes Dao a song to thank her for helping him with his music video shoot. Meanwhile, Akekaphol plots to move up his wedding date.
When she discovers that her mother has been scheming with Akekaphol, Dao flees to the beach, heartbroken — only to unexpectedly encounter Petch.
A heartbroken Sai Kaew joins forces with Akekaphol to destroy Petch. Meanwhile, Dao blames herself for her mother's worsening health.
Petch's big debut goes to plan with his father joining him onstage — but Sai Kaew and Akekaphol plot to destroy his special moment and career.
Nop tries to uncover who caused the debut-night disaster, while a guilt-ridden Dao desperately searches for Petch after he disappears.
Feeling hopeless and ostracized by society, Petch finds comfort in an unexpected ally — but just as a bright spot appears, terrible tragedy strikes.
Amid unimaginable struggles, Petch refuses to give up on his career. But his determination further infuriates Akekaphol, who shifts his strategy.
While Petch works to salvage his career and his romance with Dao, Akekaphol takes ruthless measures to finally ensure his downfall.
Akekaphol plots to publicly ruin Petch's reputation. Meanwhile, Sai Kaew teams up with an unexpected ally, changing the whole game.
The clock is ticking for Petch, who is now on the run. As Dao races to secure evidence to save him, Akekaphol discovers a traitor within his own ranks.
When his hired guns fail to take down Petch and Sai Kaew, a desperate Akekaphol takes a hostage in a bid to escape punishment.
Dao makes a life-altering choice after discovering the truth about Sai Kaew, and Petch tries to honor an old promise before it's too late.
No overview available for this episode.
