Geum-Bi is only 8-years-old, but she suffers from dementia. She is slowly losing her memory. Her father Hwi-Chul is a swindler. While taking care of Geum-Bi, he learns about the preciousness of life.
Cosmo is an ordinary boy who would love to have a pet, but his building regulations do not allow it. Thus, he embarks on an intergalactic adventure in search of a creature with whom he can share his bunk bed and teach him to jump through flaming arcs.