Anton Gorodetsky, the protagonist of the first film, finds himself in the middle of an approaching conflict between the Light and Dark Others, who are still bound with an uneasy truce.
At the birthday, Yegor would become a Great Other and acquire the power that would allow the Dark Others to break the treaty (which is only supported because the Others fear that the two sides will destroy each other).
They succeed, despite the efforts made by Gesser, the head of the Night Watch, to protect Anton from the Dark Others by putting him in Olga's body.
At this time, Svetlana rings Anton's mobile, which he left in the pocket of the coat, and Yegor, angry at her intrusion into his relationship with his absentee father, yells at her, "He has a family.
Anton convinces Alisia to give him the Chalk so that he can prevent the destruction of Moscow and the deaths of scores of Others, but is almost immediately caught by a panicked Svetlana and an enraged Yegor.
In the epilogue, as a result of the Chalk's influence, Anton rethinks his deal with the witch, and therefore never inadvertently agrees to harm his wife's unborn child, who would have been Yegor.
Zavulon and Gesser watch them from a park bench, eager to see if Anton will recognize Svetlana, despite now having never met her because of the rewriting of history.
Gesser's prediction turns out to be accurate; despite not knowing how or why, Anton recognizes Svetlana and they walk off together, implicitly striking up a less harried relationship than the one they have/had in the first film.
The website's consensus reads: "Day Watch is frequently cheesy but it offers enough twists, surprises, and inventive action sequences to maintain viewer interest.