When old family friend Louisa Oxley visits Miss Marple one stormy night seeking help, Miss Marple decides to send her and her son, Archie, to safety at the labyrinthine estate of Greenshaw's Folly, owned by Miss Marple's good friend Katherine Greenshaw, an eccentric botanist and the last surviving Greenshaw. Louisa becomes Miss Greenshaw's secretary, and quickly attracts the attention of the gardener Alfred Pollock and actor Nat Fletcher. Things turn sinister when the Folly's faithful butler, Walter Cracken, is killed in what appears to be a tragic accident. Then a guest at the house, Horace Bindler, disappears without a trace. Miss Marple is convinced all is unwell, and her suspicions are confirmed when Miss Greenshaw herself is brutally murdered. Suspects are everywhere, but none can imagine the secrets, both past and present, which Miss Marple uncovers.
「围绕四位年轻人之间可爱的关系，将触动整个暹罗广场的心」的可爱噱头氛围引入现时发生的流行文化，美甲已不仅仅是普通的绘画，它可以创建无限的图案，并成为青少年表达不受性別限制的领域之一。 剧情讲述关于爱和人际关系的故事，也包含了关于成长、学习促使四位角色的改变。 高中生Fourmod经常受到Gel Nail Boy Chian的邀请，以在暹罗广场（Siam Square）完成指甲，这使Fourmod跌倒了。但是，他后来意识到，当他发现Chian还邀请Luk Khrueng Tiktoker Bua将指甲一起完成时，他将被保留下来。为了使chian嫉妒，Fourmod决定使用他的密友Babin做同样的事情。
