The film opens with Jennifer (Song) running away from someone, frantically trying to use a payphone (is this 1994?) to call for help. After getting a dial tone — typical! — she has to hide from the person who's clearly trying to kill her. Using a rock to break a car window, she jumps behind the wheel only to discover the engine won't start. Pan to a shadowy figure walking toward her — yep, she's definitely in for it.
Realising that her car is tethered to a pickup truck, she makes a run for it only to be hit by a speeding driver and gets rushed to the hospital. Chaos ensues, and we learn that Jennifer has a gravely messed-up leg, a punctured lung, and bleeding in her brain. Yikes.
Soon a man by the name of Russell Williams (Mike Vogel), who's just a little too handsome, walks in, claiming to be her husband. Naturally, the nurse on call takes it at face value — without asking a single question or making him produce ID — and tells him he has to wait until she's out of surgery.
Once she's out of the operating room, Russell makes a beeline for her bedside and tells her he's "never going anywhere" while she sleeps. (Because that's not creepy at all, Edward Cullen.) Cue the ominous music.