Class 1-A has gone on a trip to a cabin, this cabin is completely secluded... the only way to get their is by traveling 1700 miles into the sea, the class has been dropped onto this island and have reached the cabin, after they go inside, they see a stack of letters and a basket, in the basket is a pile of uniforms, each having each students names on their uniforms and a selected color for their tie, the uniform is white short sleeve dress shirt, black pants (a skirt for the girls), and brown shoes, the girls have bow ties, the men have ties, each student has a letter with an assigned job on it, each student is meant to complete specific tasks... the island is home to demon-like creature, the creature comes out at night... and tries to break in... the students must complete the tasks to keep it from trying to break in... but the students don't know that.