14 years old. Aze was once a promising young swimmer with the potential to become a national athlete, but his sister's mysterious death shattered him, causing him to abandon his dreams. Years later, as he attempts to uncover the truth, a mysterious figure murders him. Reborn at the age of 14, he now faces the approaching tragedy and is determined to change fate. Armed with memories of the future, he must uncover the truth within a limited time—but the past is far more complex and dangerous than he could have ever imagined.
28 years old. A detective in the Xin'an Investigation Unit, she is known as “Hawkeye” for her keen intuition and exceptional observation skills. Despite her outstanding investigative abilities, she faces discrimination from her superiors due to her gender. A heavy drinker yet sharp-minded, she was the first to notice the anomalies in a series of child disappearances. Suspecting Zheng Caihui to be a key figure, she launches an investigation. However, as she gets closer to the truth, she unknowingly steps into the dark and dangerous heart of the mystery.
17 years old. Aze's older sister, a high school sophomore, is introverted and reserved, having endured years of school bullying. Her childhood trauma, caused by her mother's influence, left her deeply scarred. She is eventually coerced into a criminal scheme by a child trafficker. Though she tries to protect the innocent, she is unable to escape the brutal reality. Overwhelmed by guilt and despair, she takes her own life, leaving an everlasting shadow over Aze. Yet, the truth behind her death is far more sinister than it seems.
14 years old. Aze's lifelong best friend, he is a passionate swimmer skilled in analyzing and designing training regimens. Inspired by Aze's graceful swimming style, he pursues the sport and later becomes a national athlete. Raised by his grandmother due to his parents' demanding jobs, he remains steadfast in supporting Aze, always encouraging him to move forward. However, his unwavering loyalty drags him into Aze's investigation, ultimately leading to his murder by the same mysterious assailant. After being reborn, Aze blames himself and tries to keep Zhengxian out of danger—but their deep bond proves impossible to sever.