It is a boiling hot Boston summer. Adding to the city's woes is a series of shocking crimes, in which wealthy men are made to watch while their wives are brutalized. A sadistic demand that ends in abduction and death. The pattern suggests one man: serial killer Warren Hoyt, recently removed from the city's streets. Police can only assume an acolyte is at large, a maniac basing his attacks on the twisted medical techniques of the madman he so admires....

"After Xia Tian discovers time travel, her years of work seem to have paid off, but everything unravels when her young son is kidnapped. She sends herself back in time, discovering multiple versions of her future self. Now, all of the Xia Tians must band together to save their son in this action-packed sci-fi thriller from producer Jackie Chan"--imdb.com.