The Karlsson Brothers is a "confusion" comedy about two identical-twin brothers, each initially unaware of the other's existence. One brother is a successful, perfectionist lawyer living in Stockholm. The other brother lives in the North of Sweden with a wife and children, and is a notoriously unfaithful ne'er-do-well. The brothers meet for the first time as they go through their deceased mother's estate. Their meeting leads to a series of challenging mix-ups, turning both their lives on end. The brothers' differences prove gradually to be a source of strength, and their newfound friendship will change their lives forever.
Cobb, a skilled thief who commits corporate espionage by infiltrating the subconscious of his targets is offered a chance to regain his old life as payment for a task considered to be impossible: "inception", the implantation of another person's idea into a target's subconscious.
As a deadly battle rages over Jigsaw's brutal legacy, a group of Jigsaw survivors gathers to seek the support of self-help guru and fellow survivor Bobby Dagen, a man whose own dark secrets unleash a new wave of terror.
Kyung-chul (Choi Min-sik) is a dangerous psychopath who kills for pleasure. He has committed infernal serial murders in diabolic ways that one cannot even imagine and his victims range from young women to even children.