Baek Hye-min introduces herself to Eun-young as a new transfer student and presents a solution to a mite infestation that’s hard to stomach.

Eun-young reunites with an old friend. With sympathy for Hye-min’s lonely world, Eun-young seeks out ways to help her outlive her fate.

Evil floods the school with uncontrollable negative energy. Eun-young reaches her limit and makes a difficult decision with In-pyo by her side.