剧中讲述洛杉矶地铁发生炸弹袭击案时，在车上的蓝领工人MikeRusso只是想确保妻子Allison及10岁女儿Pearl的安全，但在错误证据及社交媒体上被「预先定罪」下，Mike被描述成是此事件的幕后黑手。Mike为了证明自己的清白及找到真凶，故此只好逃离家人、警察、社交媒体，以逃犯身份寻求真相。Particularly in the United States, marshal is used for various kinds of law enforcement officers.Federal marshalsThe federal court system in the United States is organized into 94 federal judicial districts, each with a court (and one or several judges), a United States Attorney with assistants as prosecutors and government lawyers, and one marshal, appointed by the president, in charge of federal law enforcement. The courts are part of the independent judicial branch of the government, while the marshals and US attorneys are part of the executive branch Department of Justice.In actual practice, the US marshal for the district mainly oversees court security, and has a unit of appointed deputies (other law enforcement operations and the federal prison system are handled by a variety of federal police agencies) and Special Deputies.The United States Marshals Service is a professional, civil service unit of federal police, part of the system of marshals explained above but made up of career law enforcement personnel rather than the appointed district marshals. The US Marshals Service assists with court security and prisoner transport, asset forfeiture, serves arrest warrants and seeks fugitives.State and local marshalsIn many American States marshals could be found acting at the state, local or municipal court level, marshals could be court bailiffs and/or serving process or even full police officers. Although some may be sworn peace officers their job is, in certain cases entirely civil rather than criminal law enforcement. Some communities maintain a Town Marshal who is responsible for general law enforcement as well as court duties, while others are strictly court officers. This is especially true in communities with both police and marshals.