A Successful boxing trainer discovers that her boyfriend, A reigning champion, has been cheating on her with her own sister. She sets out to get revenge by training the one man capable of dethroning him: his arch-nemesis Kayden.
In a near future, crimes and accidents can be prevented by making just one phone call to the past. However, the peace of this utopian world will be disrupted by a methodical killer who seems to have discovered the only flaw in this system.