At the age of nineteen, Ethan is stuck in a low pay job to support his mother and feels tired of his life. Fortunately, others have plans for him. A mysterious girl who seems to know all transports Ethan to the land of Keol where he is a respected visitor. He meets Danbi, a boy who protects his village with a power to control plants. Ethan learns of other types of visitors such as the animal-like Rencho and rabbit-earred Elyeos.
Danbi decides to take Ethan and his young niece Hana who is a Elyeos stranger to the Heart of Keol where strangers can find acceptance and safety. But there is a long road ahead and Hana seems to have become a target of the queen.