So-yeong, a would-be scriptwriter and a member of the so-called “Kangaroo Tribe,” is pressed toward economic independence by Ung-seop, a hairy man who is her mother's boyfriend. Noticing that hairs are being scattered around the house, So-yeong is tormented by the voice of Hairy Monster. So-yeong tries to reveal that Ung-seop is in fact the Hairy Monster.
