本剧改编自同名漫画，讲述了加奈子（能年玲奈 饰）因无法忍受上司的霸凌而从黑心企业离职，之后被优厚的待遇所吸引，进入了杀手公司。她在杀人这件事上犹豫的同时，其隐藏的才能开始涌现，从而成长为厉害杀手的喜剧故事。
Two sisters, Becca and Rosaline, who have grown apart over the years but through tragic events learn to love and respect one another all over again. Each sister flies out to the Isle of Man to discover and repatriate the body of their mother, Mary, who they learn has been living a double life, leaving their father Richard at home in Manchester, whilst creating another world for herself.
