Veijo Haukka, who has mended his ways during his murder sentence, has to face against the offspring of his victims. At the same time closeness of death threatens his relationship.

In 'Euthanizer', a mechanic who euthanizes pets as a side job finds himself tangled in a web of violence, revenge, and dark secrets as he forms an unexpected bond with a terminally ill man. The movie explores themes of racism, fear, and suffering, while also delving into the complexities of relationships and the haunting effects of the past. With a touch of dark comedy, 'Euthanizer' is a thought-provoking exploration of morality and the consequences of one's actions.