A musician by training, and at times a sorcerer. Theater conductor Konstantin Pokrovsky learns that he is endowed with magical abilities and can create magic given to him by the Upside Down - the magical side, a whole world filled with magical adventures, where real sorcerers walk the streets and incredible creatures live. But to get there, you need to jump into the case from under a regular double bass. Constantine's mentor, the magician Milian, is called upon to teach the conductor magic: clouds have gathered over the Upside Down, the world of wizards is awaiting a dangerous enemy, and the help of any initiate - a newly elected magician from another world - may be needed to contain the evil forces of a dangerous sorcerer...