This year, the holidays just don't seem to get going. Therefore, Julius, Richard, Anne, and Georg, along with Tim, decide to participate in a holiday program that promises a new adventure. During a historical tour, they notice an old oak tree that is said to be haunted on full moon nights. Of course, the five of them can't resist trying to uncover the mystery on the next full moon night, and they find themselves right in the middle of a ghostly conspiracy.