"Sever" is a Czech detective mini-series about a former engineer who decides to stand up for justice. Petr Svoboda realizes that in his profession, everything is corrupt and it is impossible to achieve success through honest work. He quits his job, enrolls in the police academy, and starts a new life. Everything goes well until his former boss, a notorious corrupt businessman, becomes a suspect in a new case. It turns out that there is an entire mafia connected to the police department operating behind his back.