In a lonely city at the end of time, a silent collapse trapped "Observer" Yi Lan in a never-ending seven-day cycle. Every day she wakes up, she returns to where she started, witnessing the same meteorite tearing apart the sky, the same flock of blackbirds passing by the bell tower in exactly the same trajectory, and the same strangers repeating the same dialogue on the street corner - the world seems to be packed into a sophisticated but cold glass cage, and she is the only one aware of the existence of the cage.
In order to break the reincarnation, Yilan must solve the mystery behind the Ouroboros totem: is it a time curse left by an ancient god before his death, or is it a self-protection program created by a certain civilization to escape the end of the world? In the cycle, she gradually discovered traces of other "awakened people" - some chose to indulge in seven days of hedonism, some fell into madness, and some became "scavengers" hunting fellow humans to seize time fragments.
When Yi Lan finally got closer to the truth, she realized that the biggest paradox was not escaping the cycle, but deciding whether to destroy it——
