The protagonist of the dramatic series "In Pursuit of Happiness" is the beautiful Katya, who works as a saleswoman in a provincial town. She lives with her mother and young daughter, as her husband died from an overdose. Unfortunately, there are many such cases around Katya: the town is literally dying from the drug epidemic. One day, she accidentally overhears a conversation between her boss Ruslan and learns that he is selling illegal substances in his store. The girl rushes to the police, but it turns out that the law enforcement agencies are protecting the criminals.