The story took place in August 1939. Eight people who were in different parts of the world and did not know each other received a letter from Mr. and Mrs. Owen at the same time. The letter warmly invited them to visit Soldier Island near the coast of Devon.Here, the couple owns a very luxurious villa.Soon, the eight people set off separately, but when they arrived at the island, they were told that the Owens were not at home, and they were received by two housekeepers from the island.

In this way, eight people entered the villa one after another in excitement and confusion.While dining that night, a gramophone in the restaurant suddenly rang, and a mysterious voice began to accuse the eight people present, claiming that they had all committed murder.To make matters worse, it didn't take long for the first victim to appear.