The action of the series takes place on the border of Russia and Estonia. The centerpiece of the film is the bridge on the border, and a discovery of a female corpse. The body is found between the Russian town of Ivangorod and the Estonian city of Narva. The police forces of the two countries investigating the incident find that the upper part of the corpse belongs to a politician from Estonia and the lower part to a student from St. Petersburg. The Russian Investigator is Maxim Kazantsev, the Estonian is Inspector Inga Veermaa. Together they investigate a series of crimes that are well prepared, skillfully executed and contain a "message" to society on the subject of social injustice.