At the beginning of the story, the protagonist Su Wan's life was suddenly broken on a seemingly ordinary day. Her husband Zhou Mingyu died mysteriously and in a miserable condition. While dealing with her husband's funeral, Su Wan accidentally triggered the mysterious power of "echo" and was involved in a terrifying cycle called "The End of Seven Days."
In this reincarnation, every seventh day, everything will be reset and time will go back to the starting point. Only a handful of people like Su Wan who have awakened the ability to "echo" can retain their memories. Su Wan found herself in a strange city called the "Land of Ending", which was filled with a strong aura of death. The dilapidated buildings, flickering lights, and strange sounds that echoed in the streets from time to time were all creepy.
In the city, there is a group of mysterious "zodiac signs" wearing animal masks. They control the rules here and constantly encourage participants to participate in various "death games." Participants must collect 3,600 special chips called "Tao" within seven days by betting against the zodiac signs before they can hope to leave this terrible place. However, as the plot progresses, Su Wan gradually discovers that things are far from that simple. The collection of "Tao" may be just a lie, with a deeper conspiracy hidden behind it...
