The Kangs are like any normal, happy, loving couple living a quiet life in the suburbs, or so it would appear to everyone who knows them. Only things are not what they seem for the pair, not when Kang Seulgi is in reality an assassin. She works to keep that secret from her  wife Joohyun. Seulgi is just not the only killer in the family, as it seems Mrs Kang also has some secerts of her own. Secrets don't stay secret in the Kang house. Seulrene