State security inspector Ivan reveals an inserted terrorists in Yugoslavia, sent there by Croatian emigrants, enemies of the above socialist state. Their mission is to select the appropriate places on Adriatic coast which they would later blow up. The terrorists are expected to set a series of explosions that would cause a public disturbance and uncertainty in the Yugoslavia's position in Europe. Ivan follows Pavle and Elsa who are staying in Croatia as tourists, stepping into action in a crucial moment.
