The Trickery of Love Dupes the Heart

Amid a bitter feud between two once-allied hotel dynasties, Prinoot and heiress Pramida are forced into a tangled fate when a past betrayal leaves them bound by twins who tie them together as enemies rather than lovers.

The Five Brothers follows the Juthathep brothers in the 1960s, raised by their grandmothers after their parents’ tragic death. Born into nobility, they are expected to embody honor, protect the weak, and—most importantly—marry well. But their lives become more complicated when a sacred promise binds one of them to marry a lady of the Dhevaprom family, and breaking it would bring great dishonor.

After discovering that her father had been having an affair with his secretary for years, Pasika was deeply hurt and her mother went into a state shock, loosing her sanity. Unable to cope with the painful reality, Pasika ran away from home and met Anupong, the owner of Andaman Pearl Resort and Hotel. He adored Pasika like his own daughter, so he allowed her to begin a brand new life by hiring her to help him manage the resort. After an explosion involving Anupong's boat, Techin , his only son, hastily returns to the Island, along with his mother Nalinee. The once peaceful island nearly burst into flames when mother and son wrongly assume that Pasika was Anupong's mistress. As it turns out, Techin had previously fallen in love at first sight with Pasika abroad, so now, dissapointed and hurt, he does all he can to get back at her and banish her from the island. However, Anupong's will specifies that Pasika has to work at the resort for two years and assist Techin in managing the company.

Fate leads Nam to meet and fall in love with Phuwanet, who was injured and sent to the hospital in which Nam became his attending doctor. She believes that Phuwanet is just a worker on her farm, although his real identity is that of the Crown Prince of Parawat.

Panat is the oldest son of Preemsuda who works as a secretary for Piraya's father, Peeradate, a government official. Panat and Piraya are lovers who decided to get married quietly in Spain. After their honeymoon, they both returned home to find that Pasin, Panat's younger brother, had fallen in love and was staying with Pasika, Piraya's younger sister. However, Panat carries the burden of a deep dark secret that would eventually make Pasin and Pasika's romance impossible and break down his own relationship with Piraya. After the secret is revealed, things escalate. The girls' mother falls ill and loses her sanity. Piraya ends her relationship with Panat, so he and his brother go study abroad. Pasika runs away from home and Piraya is left alone to take care of her mother and the family's company.

Parit, a corny and religious guy who graduated from the doctoral degree, works as the longtime manager of a consulting company. He is an intelligent and strenuously performing the consultant. One modern day, he gets a job to remain the independent consultant for Thai Lingery Co. Ltd. This way, he meets and promptly falls in love at first sight with Pantaree, the attractive granddaughter of the company's owner.