A drama about a multi-generational family of cops dedicated to New York City law enforcement. Frank Reagan is the New York Police Commissioner and heads both the police force and the Reagan brood. He runs his department as diplomatically as he runs his family, even when dealing with the politics that plagued his unapologetically bold father, Henry, during his stint as Chief.

After the death of his brother, Mick travels to America to seek Justice. Wrongly convicted of extortion and attempted murder, Mick is sent to Pleasant Hill Penitentiary's notorious death block 13. Seething with revenge after discovering the truth behind his brother's death, Mick's rage ignites an explosive riot as he makes a daring escape from death block 13.

After the tragic loss of his wife battling the forces of darkness, Gabriel is persuaded to rejoin his former team of demon hunters traveling from relatively obscurity in America to the deep unknown regions of Europe. He is joined by his estranged best friend Michael who harbors a dark secret, the mystical Hannah whose visions predict the future, and a motley crew of demon slayers. After losing part of his team Gabriel must confront his tragic past and decide who really is friend or foe.

Beings with supernatural powers join together to fight against supernatural villains.