In the year 2022, Guard (KIM Woo-bin) and Thunder live on Earth, managing alien prisoners who have been locked up in humans’ brains. One day, a spacecraft appears in the sky over Seoul, and the police detective Moon (SO Ji-sub, “Moon”) witnesses a strange sight…
Meanwhile 630 years earlier during the Goryeo Dynasty, the hapless dosa (Korean tao magician) Muruk (RYU Jun-yeol) and Ean (KIM Tae-ri), the so-called “The Girl Who Shoots Thunder”, each scramble to outwit each other in pursuit of the mystical Divine Blade, for which a huge reward is being offered. Two sorcerers in search of the Divine Blade’s secrets, Madam Black (YUM Jung-ah) and Mr. Blue (JO Woo-jin), as well as the masked Jajang (KIM Eui-sung), also set out on a desperate scramble to obtain the Blade. Meanwhile, a spacecraft emerges from a deep river, emitting light…
