Larry and Carol met their new neighbors, Haus and Lilian, and they enthusiastically invited them to drink coffee at home. Haus enthusiastically asked Larry to look at his stamps, but Larry was not interested in it. And Mrs. Haus told Carol that she and her husband were about to get married for their 28th anniversary, and they were going to travel. Unexpectedly the next night, Mrs. House Lillian died suddenly of a heart attack. Larry and Carol only saw Mrs. House being carried out under the covers. But Carol found that Hauss was not sad, but rather happy, so he became suspicious of Lilian's death.
Carol and Larry went to Haus's house again. Carol found the urn in the cabinet of Haus's house, but Haus said that he had buried his wife. Carol stole the keys of Haus’ house from the duty room and ran to his house. Haus suddenly returned. Carol had to hide under the bed, but he heard Haus’s call. It turned out that Haus had a lover, Helen Mo. S.
Carol asks her friend Tide to help find clues. Larry is very sensitive to Carol and Tide being together, so he introduces the columnist Marcia to Tide as his girlfriend. Carol accidentally discovered that the "dead" Lilian was on the bus and was not dead. Carol told her husband all this, but Larry didn't believe it, thinking that there was something wrong with his wife's spirit, but Carol thought it was the most exciting adventure game.
Carol and Larry were guarding the outside of the hotel, and they found Lilian walking into the hotel. The two followed but found that Lilian was dead in the hotel. The two hurried to call the police, but the body disappeared when the police arrived. The two of them were very upset, unwilling to go to the room again to look for clues, and finally found Lilian's ring. When the two were riding in the elevator, the elevator suddenly went out of power. When they tried to get out, they found Lilian's body hidden on the elevator, but was taken away by the power outage. The two tracked the vehicle and chased them all the way, but found that Lilian's body had been thrown into the high-temperature furnace.
Together, Larry, Carol, Tide and Marcia came up with a way. The detective writer Marcia asked Helen to participate in the audition. The lines she read were edited into a phone call to Haus. It was Carol who had understood the inside story and was ready to blackmail Haus, but it turned out that Haus was the murderer. But Carol was kidnapped by Paul first, and Larry blackmailed him. Larry rescued his wife, and Haus was shot and killed by his old lover, Mrs. Dalton.
It turned out that the truth of the whole thing was that it was not Lilian who died for the first time, but her sister, who was also cremated. Lilian pretended to be her own sister and embezzled her sister's family property. But Lilian was killed by Haus again, because Haus had a new lover, Helen. But in the end, this perfectly designed murder case was spotted by the curious Carol
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