Kin is the President of KTK Corporation and is marrying his long time girlfriend of 7 years Ganok. On their wedding night, the bride goes to retrieve a wedding present that she had forgotten for her newly wedded husband. Tawan had just left the airport after finding out that her fiancé had been cheating for two years and is now breaking off their engagement. Moreover, they are expecting their first child. Tawan, hurt and heart-broken, walks home in the rain and while crossing the street was hit by a car driven by Ganok. Tawan was hospitalized. Ganok was later pronounced death. Kin was devastated that he had just lost the love of his life, and demanded to know who that person was that caused his wife's car accident. He later went to Tawan's hospital room and read the name on her ID tag. That name is now forever embedded in his mind and promised Ganok that he will seek revenge for her with the upmost satisfaction....

Two gold-digging brothers, Prawet and Jit, steal 117 pieces of treasure from the Dragon Cave. They both are attacked by a blood-sucking bat and they are cursed to be immortal. To remove this curse, they must return all treasures they stole to the cave. Prawet wants to do it, but Jit doesn't agree with his brother. This conflict causes these two brothers to be enemies. Later, both of their sons inherit their immortality. One day, Jit killed Prawet by burning him. Traipoom, Prawet's son decides to follow his father's wish and tries to look for the lost treasures in order to take them back to the cave.

Rasa is an interior designer at an interior design company in Bangkok. Her boss Petiya receives an assignment from Pakaphong, a well known rich playboy. The assignment is assigned to Rasa, she meets Pakaphong and realises she's met him before.

Purin was brutally hurt in love when his lover, Rose, dumped him for a wealthy man and never saw him again. Purin, on the other hand, never forgot the pain that was inflicted on him by Rose and always felt the desire to get revenge. As years passed, Purim became a wealthy businessman while Rose became an alcoholic and gambler. One day the fate of the two collided again and seeing an opportunity for revenge Purim made Rose sell her daughter Kungsadarn to him as a wife in return of paying her gambling debt. After their marriage, Purin slowly starts to see the goodness in Kungsadarn and warm feelings begin to develop in his heart. However... there are other obstacles that are ahead in their path.

Set during the reign of King Phrachaoyuhua Borommakot in the second quarter of the eighteenth century when art, literature, and learning flourished, it takes viewers through the fall of Ayutthaya nine years after his death to the liberation of Siam from Burmese occupation during the reign of Taksin the Great, who established the city of Thonburi as the new capital in 1767. The story is told through the attitudes of four present day characters and their past incarnations.

Hemarat intends to buy a land where a riding park is located and owned by Chompoonit's family. He wants to turn the park into a shopping center, but Nit refuses this transaction. Hem does everything in order to subdue her himself. Nit – a well heeled women in business – has sufficient experience to solve all the problems that are created by Hem. They are involved in the business game, unaware of a powerful opponent lurking in the shadows. When they become more vulnerable, the competitor takes a step ahead as Hem falls in love with Nit and decides to end the war and help her.

"Club Friday 12" is a collection of short series about uncharted, hidden love.