A Parallel World of Five Elements of Time and Space?

The two siblings (Wan Ling and Wan Sinan) accidentally got involved in the infighting of the wealthy family because they inadvertently accepted the commission from Kelly, the president of K Group. At first, I thought it was just a love affair involving a mistress and cheating, but as the investigation deepened, I discovered that there was a bigger conspiracy hidden behind it. During the process, Wan Ling's selfish hesitation made the development of the case become confusing again. She realized that delayed justice was also an absence. She felt extremely guilty and wanted to make amends. She also suspected that she might have entered a parallel time and space by mistake. Will she have a chance to make a new choice? Where will the situation develop in the end...