One of us is not human

At Haesung High School, reputation is everything.

The popular students rule the halls, secrets are buried beneath perfect smiles, and no one dares to stand up to those in power.

Especially not Yoon Ha-eun.

For years, she was mocked, humiliated, and treated as if she didn't exist. Until one rainy night, the bullying went too far...

She died.

Months later, strange things begin happening.

A familiar face is seen wandering the school after dark.

Students start disappearing.

Whispers echo through the empty hallways.

The group responsible for Ha-eun's death realizes they are being watched.

Hunted.

One by one.

Because someone has returned.

But the girl they buried...

is no longer human.

Sometimes, the dead don't seek justice.

Sometimes, they seek revenge.