The hero of the story, a hereditary glass blower, who grew up in a small town near a glass factory, has shown extraordinary abilities since childhood. His skill is growing rapidly, causing the surprise of everyone around him, the admiration of some and the envy of other masters. Glass is not only subject to his control; it itself seems to be taking care of the young master: constantly helping him out of hopeless situations, punishing his enemies in unexpected ways... But what forces guide the brilliant glassblower? Which principle is stronger in his work, light or dark? He has been trying unsuccessfully to figure this out his entire life. And only after achieving the highest skill, having experienced the loss of loved ones and finding himself on the brink of death after incredible trials, does the master make his choice...