《九更天》是一部以越剧形式呈现的古装戏曲作品，原创灵感来源于京剧名作《滚钉板》的改编。故事围绕商人米进喜之妻陶氏与邻居侯花嘴之间的奸情，以及陶氏利用毒药谋杀丈夫的悲惨命运展开。

在这个充满阴谋和复仇的情节中，米进喜弟弟米进徒闻讯返回家乡，却被陶氏诡计所迷惑，最终遭到冤狱。他的忠实仆人马义不懈地追寻真相，并最终揭露了所有人的罪行，但就在马义准备为主人报仇时，他却被迫用女儿换取证据，以证明主人无辜。

随着案件的深入调查，一系列错综复杂的情节层出不穷。太师闻朗 ultimately arrives on the scene, and after a series of grueling tests, including being subjected to the "copper hook" and "nail board" torture devices, 马义's innocence is finally proven.

In the end, justice is served as all parties involved are brought to account for their crimes. The play was performed by 魏银凤 and 钱妙花 in 1946.