2:13

Every night at exactly 2:13 AM,
a classroom appears on the rooftop of Haneul High School.
Only a few students can see it.
Inside, they gain supernatural abilities beyond imagination.
But in exchange-
they lose a memory every time they enter.
At first, the memories are small.
A forgotten conversation.
A missing face.
A name that suddenly feels unfamiliar.
Then the losses become unbearable.
When quiet transfer student Yoon enters the classroom for the first time, a mysterious girl grabs his hand and whispers:
"This time... please remember me."
But he has never seen her before.
Or at least-
that's what he thinks.