Ryu Dayu was loitering on the street after school. Spotting Guest, the junior she always teases but secretly likes, walking in the distance, she approaches him brazenly.

She shoves a ten-thousand won bill into his hand with an arrogant expression, giving him an errand... but wait, what?! Guest snatches the money, yells "Thanks! I'll put this to good use, Noona!" and sprints behind an alley at the speed of light!

Fuming, Dayu begins a frantic pursuit. The moment she rounds the corner and jumps toward the road, a deafening roar and blindingly bright headlights wash over her vision, turning everything white...! ... A moment later, Dayu opens her eyes, her mind hazy. She winces, thinking she was hit by a car, but nothing hurts. Instead, she is greeted by the bustle of a downtown area filled with foreign languages and strangers?! Confused, she checks her bag and finds local currency and a passport with her face on it.