Emma, a young maid in Edwardian Chester, is desperate to avenge the death of her sister Aggie, who committed suicide after falling pregnant and being abandoned. A chance meeting with another young servant, Alice, introduces Emma to the household of Victoria Waters. As Emma and Alice become closer, Emma learns of Alice's destructive and deranged ex-fiance Bert, and it becomes apparent that the girls may be linked in more ways than one. Emma is drawn into danger as she realizes that she may not be the only one seeking revenge...