While on patrol duty, EU sergeant Ling Sun-fung and her team are called to assist a criminal chase. A gun battle erupts and Sun-fung loses her father, who dies from a stray bullet to the head. Sun-fung continues the pursuit, but a strange natural phenomenon suddenly turns her away, taking her back to April 1—three days prior to the incident. Realizing that she has travelled back in time, she uses this opportunity to save her father's life. Village chief "Ditch", an informant for the ICAC, discovers Sun-fung's special ability and teams up with her to investigate a corrupted cop. Unfortunately, their persistent disruption to the timeline causes severe butterfly effects, with unsettling consequences.
as 凌晨风 Ling Sun-Fung
as 关鼎名 Hugo Kwan Ding-ming (Ditch)
as 郭尚正 Kwok Sheung-ching
as 章巧悦 Joyce Cheung
as 冯芷澄 Fung Chi-ching
as 陈劲威 Chan King-wai
as 李姿婷 Crystal Lee Chi-ting
as 贺小美 Ho Siu-mei
as 凌海 Ling Hoi
as 贺展祥 Tom Ho Chin-cheung
