Winter has covered the entire forest with a blanket of snow. But all the inhabitants of the Green Forest are not discouraged and are preparing together for the celebrations in honor of the Winter Solstice. Some even venture to the Great North in search of souvenirs for their relatives! Among such brave souls were the parents of the fox cub Bartolomeo, Pimprinella and Serafin, who decided to please their beloved son with a memorable gift. However, on the appointed day they did not appear at the Zeleny Bor station, where their relatives were waiting for them... Lis Archibald and Bartolomeo immediately go in search of them by train and will have to get off at each of the four stops, including the final one – the Winter Quarters, where, according to rumors, the terrible Spirit of Winter dwells a long time ago, which keeps The whole neighborhood is in fear.Travelers will have many meetings with both familiar and beloved ones, as well as with new residents of the magical Green Forest, new secrets and a dizzying, full of dangers and adventures investigation with a philosophical meaning.