This film starts off pretty much exactly where Nightwatch finished up, there is a quick voice over recap and then we are into the action, with Anton having just lost his son to the Dark Others, Zavulon in particular. Svetlana is now in training with Anton; he spends much of his time hiding how he feels about her while she tries to show him how she feels. Of course dating the trainee is a big no-no according to Geser, especially one that will probably be such a Great Light Other.
A thousand years ago an agreement was reached, the Light and the Dark negotiated a truce in order to prevent their mutual destruction. Each side ensures the other obeys the rules. The Night Watch are “the good guys” preventing the Dark from breaking the truce. But legend tells of the arrival of a “Great One” who will choose a side, and that side will become unstoppable.
Based on a trilogy of Russian books(by Sergei Lukyanenko) Nochnoy dozor is the first in a series of three books, and for the most part deals with Anton. Born human, he was one of the few able to see, and so become, one of the Others. Each new arrival must choose a side, Light or Dark, he chooses Light, and the film opens with him tracking down a vampire.