The film is based on Vladislav Krapivin’s fairy-tale
«Children of the Blue Flamingo». The fifth-grade pupil
Zhenya Ushakov finds himself on a mysterious island
called Dvid, which is not shown on any map. The people
there wear numbers, they shouldn’t make noise or laugh
because it annoys MO Fo, the enormous octopus living
in underground caves. Their ruler Takhomir Tikho
ensures the law and order on Dviv, while the delinquents
face the meeting with the enraged octopus. There is
also an ancient legend about a young knight from a
different world, who will free the islanders from the
terrible oppressor…