Plot Summary:

One hundred years ago, aliens landed on a mountain near where a small, white five tailed fox lived. After being stranded on Earth for one hundred years, they are ready for a test flight to see if they can return home. The test fails as one of the aliens makes a mistake, and the other aliens tell him to leave.Yobi, The Five Tailed Fox revolves around a kumiho, a nine-tailed fox that can assume different forms including human. Kumiho are familiar figures in Korean folk tales, and they are usually depicted as magical creatures that take female form to lure and prey on humans. This time, however, the main character is a young, kind-hearted fox with only five tails, instead of nine

The runaway alien finds itself taken in by a class of students at the foot of the mountain. There, a teacher named Kang trains students who don't fit in at a regular school. To save the alien, the five tailed fox takes on the form of a human girl, and joins the school under the name of Yobi.

Staying at the school, Yobi becomes friends with one of the students, a boy named Geum-ie. Interested in Geum Yee, She enjoys her time with the humans especially with him, until a fox hunter appears, as well as a shadow who gives Yobi a device which will allow her to become human by taking the soul from a human...