Isaku

It's the last day of school before summer vacation. Kenta is gearing up for another boring summer when he receives a mysterious note. After school, he walks into the old, condemned school building, following the note's instructions. Inside, he finds that several of his classmates and teachers have received the same note as well. Everyone decides that this is some kind of a joke, and starts arguing about the identity of the prankster. Suddenly, they hear the entrance being boarded up... Trapped inside the abandoned building, the group realizes this is no ordinary prank. As tensions rise and strange occurrences begin to unfold, they must work together to uncover who brought them there and why. A dark and unsettling tale that explores the depths of human nature when faced with extreme circumstances.