Would You Like to Make a Contract for Eternity?

Synopsis

At work, Yoon Kang-oh and Chae Yi-soo appear to be complete opposites, the kind of people who are naturally incompatible. In reality, however, they are long-term lovers who live together—and they still love each other passionately… Or so they thought. While attending an acquaintance’s wedding together, the two witness a soul-contract ceremony.

“Please keep in mind that should either of you open your heart to someone other than each other, you will die.”

For the first time, they are forced to confront the true feelings and anxieties they have kept hidden from one another.