Jimmy (Liam Neeson) is an experienced, shrewd and capable professional killer who works for the gangster Sean (Ed Harris). The two have worked together for many years and have formed a deep friendship with each other. After living in blood and conspiracy all day, Jimmy felt very tired and he had the idea of "retirement". Mike (Joel Kinnaman) is Jimmy's son. His father's special identity makes the relationship between the father and son very indifferent. However, an accident caused Jimmy to kill Sean's son Danny (Boyd Holbrook), and Mike also became the target of the gang. In order to protect the safety of his son, Jimmy reloaded and started a bloody fight with his old friends. They only have one night. After one night, what will be the ending of Jimmy and Mike?