The Secret of Moon Castle

It's vacation again! This time Paul will spend it with his friends - Mike, Peggy, Nora and Jack. Moreover, Paul's entire royal family will come to England to visit. And a real castle has been rented to accommodate them. And the castle, it turns out, is not simple - mysterious events occur in it, strange sounds are heard, books jump out of the shelves, people come to life in the portraits... The guys decide to figure it all out, and most importantly, find out who is the mysterious inhabitant of the castle tower?.