Da-bin, who dreams of a normal high school life, takes his younger sister Eun-seo, who is deaf in one ear, to and from her school every day. When Da-bin learns that his family may move to a distant area for Eun-seo, he applies for an international exchange program, hoping for a final trip with his girlfriend. However, as he starts working at a motel to pay for the expensive program fees, situations lead him farther away from going on the trip.