Serija Cijena strasti priča je o Asli i Ferhatu, dvoje ljudi s potpuno različitih svjetova čiji se životi sudaraju u neočekivanim okolnostima. Asli, sestra policajca Cema, biva nevoljko uvučena u mračni svijet Ferhata, hladnokrvnog plaćenog ubojice koji radi za svojeg ujaka Namika, ne znajući da je on zapravo njegov biološki otac. Dok Ferhat žrtvuje sve za obitelj, Asli pokušava pobjeći nakon što je prisiljena liječiti ranjenog muškarca na Ferhatovom imanju. Njihova sudbina se dodatno zapliće kada Ferhat dobije zadatak ubiti Asli, ali joj umjesto toga nudi brak kao jedini izlaz i šansu za preživljavanje, stavljajući je pod svoju zaštitu. Cijena strasti istražuje granice ljubavi, obiteljske odanosti i moralnih dilema, dovodeći u pitanje hoće li Asli prihvatiti ovaj prisilni brak kako bi spasila svoj život i hoće li Cem uspjeti razotkriti kriminalne aktivnosti koje okružuju njegovu sestru i Ferhata.
A poor, widowed woman desperate to support her 7-year-old daughter and a wealthy business executive with a sick mother enter into a contract marriage.
As part of a superstitious marriage to ward off bad luck, teenagers Praomook and Chalantorn are temporarily married to help Chalantorn's luck. Chalantorn has always thought of Praomook as an ugly duckling and a nuisance, while she has always been in love with him.
Years later, they meet again by chance in South Korea, where Chalantorn gets shot. Believing that the misfortune is back again, his parents ask Praomook to marry him to dispel it. In exchange, they offer to buy back her father's house, which they lost due to his debt and was a burden on her. Praomook agrees to marry him, vowing to make him fall in love with her to get back at him, while Chalantorn believes she is manipulative and selfish. To get rid of her, Chalantorn pretends to be in a gay relationship with his best friend, Rut, who is attracted to Praomook and wants to win her over.
Takenouchi plays an aquarium employee named Kengo, who seems ordinary at first glance but actually possesses a secret that he would sacrifice everything in order to protect. Meanwhile, Ueto plays Risa, a young woman working in the sex trade in order to pay off her brother's debt, though her situation has led her to contemplate suicide. These two characters, both full of despair, meet each other and end up entering a contract marriage purely for its benefits. However, as they overcome various troubles, their relationship begins turning into true love.
After a celebrity discovers her wealthy fiancé has been unfaithful, she has a drunken one-night stand with her makeup artist and risks her reputation.
Treenut got to know Time because of an accident that happened to Treenut’s student. This impressed Time and he came to see her more often. However, Time was afraid to tell Treenut that he loved her because he still couldn’t forget his former love with Marisa. Instead, Treenut decided to marry Touch, who happens to be gay. Touch urgently needed to get married and have children for his grandfather, Patthana; it was the only way for Touch to keep his position as president of “Methee Group”. Time met Treenut again as Touch's bride-to-be. He was in agony but needed to kept Touch’s secret from Orachun who could expose Touch and take his position. Chane, Touch’s ex-boyfriend, began scheming for reputation and Touch’s money. This chaos began to endanger Touch and Treenut.
After a one-night stand with Pokpong, a male dancer Lalin meets at her friend's bachelorette party, Lalin decides to hire him. The job is simple; Pokpong is to marry Lalin for a few months so she can prove to her family that she deserves to be the heiress of her father's company.
Things start to change when Lalin discovers there is more to Pokpong, than just a one-night stand.
Srikanda, Phawinee's sister, is a beautiful woman whose father is very proud of her. She fell in love with Nopphanai and despite her father's disapproval, they decided to elope. One day, Phawinee meets Srikanda by chance and notices how she looks thinner and depressed. She eventually gets ill and passes away.
Phawinee is angry after finding out how her sister was bullied by her mother and sister-in-law, so she decides to sign a marriage certificate with Nopphanai with a deal of "no touch", in order to take care of her nephew. Afterward, Phawinee moves in where her sister lived and starts to fight with his mother and sister. She doesn't give in to them as her sister had, and so her revenge begins.
It is said that marriage usually begins with love. But for Ingjan... her marriage began with... a grudge. When Ingjan's family attempts to trick her into marrying an old toad in order to pay off the debt they had taken, Ingjan decides to escape. Somehow she meets a young vineyard owner, Sichon, along the way, who helps her to escape. However, he is not as kind as he looks at first sight. In order to pay off her family's debt and protect her, Sichon, wants her to marry him and birth a child for him. The duration of this arrangement is one year only but the price from both sides are hefty. The dilemma is great. But, Ingjan never was someone who could be used as a simple tool. Especially by dangerous people like this Mr. Vineyard.
Nia's life turns upside down when Leo, a wealthy businessman, selects her to become his wife by contract. Juggling her newfound power and a manipulative half-sister, Nia must figure out what to do when her feelings start to become real.