The Kumiho family circus in town -- and with it, apparently, a mysterious murderer. The members of motherless family aren’t helping their case with their strange remarks about humans and their initial performances, cavalcades of dismemberment and torrents of blood which terrify the local kids. Pretty soon, a dour, downbeat cop is on the tail of the plucky, bumbling Kumihos. Or rather, tails -- “kumiho” is the word for the fox spirits of Korean mythology, and this clan from Nam Mountain near Seoul, temporarily disguised as people thanks to a magic spell, must eat human livers during a brief, once-in-a-millennium lunar eclipse to shed their foxy nature and assume permanent human form. When the sleazy reprobate on the run from mobsters stumbles into their eerie household, he soon finds himself a little too enthusiastically involved in their scheming after human flesh—and involved with the sexy elder-sister fox spirit as well!

During the Korean War in early 1950s, mother’s family comes and stays at Dong-man’s house. His uncle on father’s side is a North Korean partisan and the uncle on mother’s side dies while fighting as South Korean soldier. For this reason, his grandmothers don’t get alone. Dong-man tells a stranger that his partisan uncle is home and his father gets arrested.

Yeong-chun becomes a gigolo after the woman he thought he loved left him. The reason she left was because Yeong-chun lacked money. He jumps at a chance to make quite a bit of money off a middle-aged woman, but what must he do in return?

Deok-bo intends to fight his Eun-swi for the love of Bon-hie, but he is impressed by his rival's manly strength upon meeting. They become very close friends. Bun-hie, who was hoping to make Eun-swi an upstanding citizen is furious that he now spends all of his time Deok-bo. She decides to murder her former admirer-turned-rival.

Choi Seok, the principal of a girl's high school, adopts Jeong-nim, a Japanese student there. However, they develop a disturbing relationship that scandalizes the local region. His family is disgusted and sends the girl back to Tokyo whil Choi Seok loses his job, but the two cannot stop thinking about each other

Mi-young shows her boyfriend, Soo-hyun, to her two sisters. However, the sisters feel weird after the meeting, since both sisters immediately fall in love with Soo-hyun.

Lee Hyeong is a talented songwriter. He happens to connect people who are not good with love. Those include Hyeong-Gyeong who wants to become a singer, but she suffers from stage fright. Scully is a high school student. She helps Lee Hyeong's spirit. Chan-Young is a colleague of Lee Hyeong and he likes Hyeong-Gyeong, but in vain.