We don't belong to any era or space, there are only unknown domains where we can learn and evolve from each other through tunnels. The ignorant girl Gu Beiye rescued a long-haired boy from another domain when she saw an injustice. This move brought her a series of troubles: unknown white creatures. Magical battles with the quality of a magic movie. But then the boy disappeared, leaving only the little white thing, which made Gu Beiye at a loss. One wave after another, the blue-haired boy who was going to a foreign land encouraged Gu Beiye to help him. Is this an unintentional coincidence or a plan? Is Gu Beiye, who is confused on the road, going to a foreign land? Only unknown territory awaits......