Inside the plane heading to Jeju Island, Lee Seong-hu stared out the window in silence while Oh Seok-ho rambled excitedly about unplanned itineraries. Yu Se-ri smiled as she looked back and forth between the two, but a corner of her heart felt strangely heavy. The pension was close to the sea, a perfect travel destination during the day. However, as the sun set, the atmosphere shifted. Laughter echoing from the end of the alley, the gazes of strangers passing by, lights that only turned on at night. Seong-hu instinctively tried to avoid that area, and while Seok-ho pretended to be unfazed, his body tensed up first. Se-ri sensed that this was no ordinary tourist spot. And so, the trio's journey began quietly, with laughter and anxiety overlapping.

And they arrive at the pension.