The Secret of the Scary Castle

The parents of young Justus are scientists who study nature and the environment. They travel all the time, and later died during an expedition. The only relic left behind is a video tape they recorded before their death, which indicates that the matter is related to a strange castle. In order to find out the truth of the matter, Justus and his two little friends Mouse established a detective organization. They used the prize money Justus received in a competition to start their adventure. After deciphering the hints left by their parents, they finally found this mysterious castle, and then encountered many strange people and weird things here.