After the Yeats' family business went bankrupt, Raina's mother, Helena Yeats, fell ill, turning Raina from a pampered heiress to a nobody struggling for food. To pay for the hefty hospital bills, Raina became Craig Jenson's sugar baby. They made a deal to only have sex. She could never interfere with his personal affairs, not even if he got engaged or married. One day, out of the blue, Craig announced his engagement to the public—it was to no other than Raina's step-sister, who shared a father with her and liked to show off in front of her. That was when Raina found out she was pregnant. She resolved to end things with Craig, leave, and raise the child on her own. As to the reason why she had chosen to become his sugar baby, she no longer knew—perhaps it was because of money, perhaps it was because he had charmed her during her youth in a fateful encounter. However, as the days went by, Craig could no longer feel indifferent about her. She wanted to stay by his side, but he said they could never have children together. As a result, a hidden secret gradually faded away...