Where did the sea disappear to?

A large mole family has gathered in distant lands - where it is warm and grapes grow, from which you can prepare a lot of nutritious raisins for the winter. At home, in the Beech Forest, only Murkavka, Povz and Martina remained. But the children are not afraid to be alone, because they have friends - the beaver Zagat, the squirrels Zhuzhik and Erzhik - with whom every day is full of surprises and adventures. Especially since the famous singer Sonya Sadova has visited the Beech Forest, and with her - a real detective story...