Hari and Duri go on vacation with their family for the winter. They find Joo-bi, the sky goblin, on the wings of the plane and summon Sinbi and Geum-bi. As soon as they save Joo-bi, unknown Skewts attack and the Jörmungandr, a legendary monster from the deep seas, tries to swallow the plane. Meanwhile, Kang-rim, an exorcist, makes an effort to save his friends, but the Jörmungandr even attacks the sky goblin empire. Hari and friends begin an unavoidable adventure to the skies... (Source: HanCinema)