Daniel, the only son of Gary and his wife, was involved in a car accident and was destroyed by the perpetrator. After Daniel disappeared, there was evidence that he had embezzled public funds and absconded. The grieving parents suddenly remembered that on the same day of the accident, Gary had brought back a female car owner whose car had broken down. Many details on that day showed that she and the real owner were hiding something... and the lies they wove were watertight, and there were many obstacles in finding the answer. In order to get the final truth, Gary and his wife disguised themselves and started a carefully planned contest... This film is adapted from the classic Spanish film "The Invisible Guest", which was rated as the annual unpopular high-scoring film by Douban.