In the summer when I was 17 years old, there was a secret hidden under Taoli Lake in Nankai Middle School.
Lin Zitong, a hard-spoken and soft-hearted "science and literature youth";
Zhou Xiaolan, a rebellious but intelligent "problem girl";
Zhao Qiming, a handsome and righteous basketball boy.
Three people with very different personalities came together because of a legend.
They broke into the maze of lakes with many traps and left indelible traces in each other's hearts.
Under the lake, hidden are not only the echoes of history, but also their eternal youth.