An underground society dedicated to murdering society's ingrates, nincompoops and scallywags.

Headey will star as Sally, the daughter of Sue, a woman who murders her abusive husband in the 70s and then goes on to found a vigilante network in present-day London. When Sally is recruited into the gang, along with two men, she discovers that all is not as it seems, and that absolute power may have corrupted her mother absolutely.