Jongwoon is the kid that doesn't have any friends. He is the weird kid, looking for bugs and playing and speaking with his turtle, Ddangkoma. When he goes up to the forbidden attic and finds a weird mirror, he's got a new hobby. But his new hobby gets him a lot of trouble. He travels to a whole different world, meets his first friends, but can he get back to his own world? To his mom? To his turtle?