Life of Marco, a sixth-grader, goes much like it does for all his classmates: school days, trips to the capital, festive events, and summer vacation; friendship with boys from the street and with a girl from a theater troupe. But everything changes when a civil war begins in the country. The young state where the heroes live and act enters a military conflict with the Empire. Adults and children whose lives pass in a fishing settlement on the Black Sea coast will have to experience many dangerous adventures, while keeping in their hearts honesty, courage, and kindness.