About

Han Dongmin and Guest have been close since childhood because their parents are best friends. Around the age of six, the two made a promise to get married, even hooking their pinky fingers. 10 years have passed, and Dongmin's family and Guest's family are going on a trip together. Meeting again after a long time feels a bit awkward. Then, in the evening, Dongmin ends up sharing a room with Guest. Having realized his true feelings, Dongmin speaks to Guest.