Vasif, a retired police officer, takes care of his granddaughter Zeynep after losing his daughter and son-in-law in a traffic accident. After losing her mother and father, Zeynep turned into herself and lost her intimacy with her grandfather. Vasif learns that his old truck, which has its license on him, has a 10-year tax debt, and from that moment on, nothing will be the same.
Dark Blue Night tells the story of the socio-economic distress of the low-income working class in Turkey. Semih, pursues his dream of becoming a footballer, unlike his friends who become miners. Unable to find a job in a club, he starts having difficulties, falls into deep credit debt. Married and having a daughter, Semih’s only pillar is his father Kazım, a retired miner and union representative. Although his father forbade him due to having been lost his other son in a mine accident, he starts to work as miner. Soon after Semih loses his arm during an accident. The mine owners offer to pay blood money. Semih first leans towards this idea that everybody else accepts, with the death of his father, his mind is changed. His unstable mood also causes conflicts with his wife. She leaves home. On the one hand, Semih pursues his legal struggle and on the other, he works hard to get his family back.
Growing up, siblings Sedat and Kahder live a happy life with their childhood friend Orhan. The trio's kinship is further strengthened by the union of Orhan and Kahder in a holy matrimony. However, when the siblings are involved in a fateful accident, Orhan's faith is put to the test in his desperate attempt to save his sanity by making a deal with the devil, all in the name of love.