The dashing sailor Alexei Alekhine discovers that life, like in a fairy tale, is a real adventure. As soon as Lyokha emerges from the seabed in an unidentified principality and barely manages to rescue the little dragon, who is left alone, problems arise: urgently cure Prince Filimon's incurable melancholy, defeat the invincible strongman Bambula, protect the principality from treacherous enemies and greedy traitors. And meet a princess for the first time in his life. So much to do, his head is spinning! In his dangerous adventures, the sailor is aided by his faithful friend, the little dragon Gorynych, who considers Lekha his own mother. But a huge surprise awaits the friends...