Season 1

Cha Seokhoon and Na Hongjoo leave for Hong Kong to find Ko Dongshik who ran off with the company's funds. Yoo Seyoung is there as well to take over the hotel, and Kang Minwoo also leaves for Hong Kong after getting an invitation from his lover. Meanwhile, President Jong has a heart attack during the meeting with Seyoung, but luckily Seokhoon was nearby to perform CPR. Seokhoon and Seyoung recognize each other.

Upon returning to Korea, Minwoo couldn't take Roy home, so he takes him to their summer house. Roy has nightmares and looks for Hongjoo. On the other hand, Seyoung finds out why Hongjoo tried to kill herself and offers a million dollars to Seokhoon for three days of his time. Seokhoon gets mad at first but ends up contemplating about the offer.

Minwoo asks Hongjoo to stay with Roy at their summer house and to be his babysitter. Hongjoo wanted some alone time from Seokhoon and she accepts Minwoo's offer. Meanwhile, Na Honggyu is helping Park Hansoo follow Minwoo and finds Minwoo and Hongjoo together and gets the wrong idea.

When Minwoo didn't come home, Han Jiseon hires a private detective agency to find him and learns about Roy's existence. While Hongjoo believes that the reason behind her marriage troubles is because they don't have a kid together and makes an appointment at the hospital.

Hongjoo finds out that Seokhoon has been in contact with Seyoung and gets disappointed by his attitude. She gets a phone call saying that Roy is missing and leaves Seokhoon behind to find him. Seokhoon goes to the summer house to pick-up Hongjoo and asks for time to think about the situation.

In order to become an official employee, Seyoung commissions Seokhoon to find out the schedule of the M Hotel President Doo. Meanwhile, Hongjoo learns that Seokhoon has been helping Seyoung and gets upset. Hongjoo goes to see Seokhoon at his work and runs into Seyoung.

Seokhoon goes to Kangwondo to find the owner of the beef soup restaurant in order to be able to negotiate with President Do. Seyoung takes advantage of the trip and gets in Seokhoon's car. Grandma says that it takes one day for the soup to achieve the taste, so they end up staying the night.

Seokhoon gives his resignation letter to make things up with Hongjoo and denies the team leader position Seyoung offers. On the other hand, Seyoung goes for a checkup and runs into Hongjoo, and she finds out about Seyoung's condition.

Minwoo gets evidence for Jiseon's adultery asks her to give up alimony. Meanwhile, Seyoung is worried about Seokhoon after hearing that he is getting a divorce and goes to see him at Jo Youngcheol's condo.

Seyoung is excited to see Seokhoon back from Brazil but acts cool instead. Meanwhile, Minwoo and Hongjoo attend couples party and run into Seokhoon and Seyoung.

Honggyu stumbles upon Seokhoon and Seyoung while they are out enjoying their date and finds out about their relationship and breaks it off with Yoo Sejin. Jiseon finds out that Hongjoo has been at her house and pays her a visit. Minwoo makes a decision after hearing Jiseon's actions.

Minwoo and Hongjoo prepare for their wedding. Hongjoo bravely declines to sign a prenup. Seyoung's father found out about her relationship with Seokhoon and tries to make a decision.

Jiseon asks Hongjoo to give up parental rights of the children but gets denied. On the other hand, Seyoung gets fired and tries to start a hotel business with Seokhoon and meets with investors. Minwoo tries to stop them from making a comeback.

Minwoo tells President Yoo Dalho about the million-dollar rumor that Seyoung involved in. President Yoo collapses from shock and Seyoung vows to get revenge and get her position back as the company's president. Meanwhile, Jiseon continuously interacts with Minwoo and Hongjoo is troubled by her actions.

Seyoung fights back, so Minwoo uses all his resources or last resort to get back at her. While investigating Minwoo's slush funds, Seokhoon sees Minwoo and Jiseon together at the summer villa.

Minwoo causes tax audit on Seyoung's company. President Yoo tells Seyoung to meet up with Minwoo to negotiate the losses. Furious, Seyoung tries to find other solutions. Meanwhile, Minwoo suspects Hongjoo for Seokhoon finding out the location of the slush funds.

Minwoo threatens to withdraw all business transaction if President Jang Taehoon doesn't fire Seokhoon. Seyoung goes in for surgery and receives disturbing news from Joo Myeonghwa.

Seokhoon decides to take President Jang's offer to go to the New York branch after being dumped by Seyoung. Meanwhile, Hongjoo visits Jiseon to apologize and decides to leave Minwoo's house after being pressured by his mother.

Seyoung is unable to wake up after her surgery. While looking after Seyoung, Seokhoon receives a letter from Youngcheol. Minwoo hears about Dongsung's bankruptcy and gets ready to destroy Seyoung and Seokhoon.

Seyoung asks Myeonghwa to send Hongjoo as her caretaker. Hongjoo arrives at Seyoung's place and declines her offer. Meanwhile, Minwoo gets caught trying to bribe Dongsung's creditors. With re-opening of the M Hotel in Hong Kong, rumor is going around that Seyoung has a terminal illness.