Haerin and Danielle couldn't be more different. Haerin is a small-town mechanic from Yeongpyeong, South Korea, fiercely dedicated to her garage and her quiet, simple life. Danielle, on the other hand, is a sharp-witted psychologist from Australia, used to city life and determined to stay as far away as possible from the cat-eyed girl who's suddenly sharing her space. Their worlds would've never collided-until fate threw them together under bizarre circumstances. Forced into a fake marriage, they're stuck living under the same roof, pretending to be a loving couple for the sake of appearances. What starts as a reluctant arrangement quickly spirals into chaos as living together isn't as easy as they thought. With their clashing personalities, noisy family members, awkward encounters that test their patience, and rules like "No meddling in my personal life" and "Stop stealing my coffee!" tensions run high. In a world where nothing about them makes sense, will this make-believe marriage lead to a genuine happily-ever-after? Or will their contract run out before they can figure it out?

Haerin had failed her midterms-thanks to a soccer match-and now found herself stuck in summer school alongside Minji. At first, she didn't think much of it. It was just another inconvenience. But everything started to shift with the unexpected arrival of Danielle Marsh. Known around campus as the "Cold Prince," Haerin had always kept her distance-quiet, unreadable, untouchable. Yet, with Danielle's sudden presence, warm and bright like the sun, the ice around Haerin slowly began to melt. After all, even ice can melt when the sun sits too close.