Ahn Eun-Youngg (Jung Yu-Mi) is a new nurse teacher at school. She has a special ability to see jelly like monsters that are made from residue of human desire and she can also eradicate these jellies. She uses a toy knife and a BB gun to take out the jellies. She senses that a mysterious event takes place at her school.
Hong In-Pyo (Nam Joo-Hyuk) is a Chinese language teacher at the same school. Hong In-Pyo has a special energy. In order to protect the students, Ahn Eun-Young and Hong In-Pyo work together to eradicate these jellies.