Ethan Smith is always been a curious cat back when he was a child up until at his current age. If Ethan was curious, he will do his best to know and solved it. But one day, He heard a story from their senior and it was a true story happen in their campus back in 1940 before Sally's building was renovated. But he wasn't aware that this is the first step, him solving a mystery with the help of his club members due to his curiousness. Will Ethan met a mystery that he can't be solved?.