You shouldn't go into an unfamiliar Door to avoid getting into trouble...Or should you go into an unfamiliar Door to visit amazing places, learn a lot of unusual and interesting things, experience unusual and sometimes dangerous adventures and find new friends? With my brother and sisters Volodya and Masha, curiosity turned out to be stronger than caution, they opened that Door and went into it. Could they have foreseen that the return would be so difficult and dangerous? And it all turned out to be Masha’s amazing resemblance to the runaway princess...