When he was sixteen years old, Knie left his hometown alone to study and find his father. He got something from the brigade - El Niño. People who hold El Niño can live forever, but at the same time, their only weakness is the most important person in their hearts.
In the darkness of Tinshe, there are young and promising intelligence agents, idiot brothers who beat enemies, the notorious Phantom Troupe, as well as Kne's classmates, wealthy daughters, members of the Hunter Association... This group of people who were originally unrelated to each other, but the appearance of El Niño has made their fates complicated and intertwined.
Taking Tinshe as the starting point, the girl is on her journey to find her father, and the wheel of fate brings everyone together.
However, under the influence of El Niño, people around Kne began to have troubles one after another. . . .