Heavenly nomads are the most mysterious people in the history of the upper and lower worlds. Mysterious, misunderstood, they plow the air ocean on krushts, giant flying monsters the size of a rock, and avoid all contact with other people. Only in spring the lower and upper worlds intersect. According to ancient tradition, before initiation into men, each young man passes a great test - Mirtar. Exactly a year he must spend in the lower world, survive, overcome all his dangers, withstand all his temptations, and at the end decide: return home or stay. Warack, nicknamed Fidget, is looking forward to starting the challenge. His soul longs for adventures and battles, great achievements, and not a dull life. He also has to find his older brother, who did not return from his Mirtara a few years ago. But who knows for certain how this journey will end?