Delivery boy Lin Che was on the way to deliver food on a rainy night, and when she was about to receive a bad review due to overtime, she accidentally triggered the interference of the mysterious law of cause and effect and was involved in the vortex of time. Lin Che found herself trapped in a constantly looping timeline, and the only way to escape was to solve the mystery of her sister Lin Xiaoman's death. During the process of exploration, he encountered pursuit and interference from the Time Administration, and at the same time discovered the shocking truth hidden between himself and his sister.
