We are waiting for new adventures of Luntik and his friends — Kuzya the grasshopper, Bee, Elina's butterfly, Vupsen and Pupsen caterpillars and others. This time, the cheerful company decides to help Luntik find his mother and return home to the moon. To do this, Luntik needs to climb the Black Mountain, the road to which is full of adventures and dangers. The friendship of the heroes will be subjected to difficult tests, but kind and loyal comrades will be able to overcome any obstacles.