该剧改编自紫金陈推理小说《坏小孩》 ，讲述了沿海小城的三个孩子在景区游玩时无意拍摄记录了一次谋杀，他们的冒险也由此展开。扑朔迷离的案情，将几个家庭裹挟其中，带向不可预知的未来......

During the Late Tang Dynasty, a manor is invaded by a demon cat and a sense of unrest befalls the capital of Changan. A poet is charged with investigating the case and meets up with a monk. The two work together and pull apart the thread of clues to reveal a history of truths leading to the events.