A man named Shaun awakens from an apparent drug overdose to find himself lying next to a dead woman. Horrified and confused, he quickly realizes that he has no memory of the previous night and must figure out what happened. With only his phone as a clue, he sets out on a frantic journey through the city to piece together the events that led to this moment. He reaches out to his ex-girlfriend Amy for help, and she reluctantly agrees to meet him despite their strained history.

As Shaun navigates through a labyrinth of streets and alleys, it becomes clear that he is being pursued by more than just his past demons. His distress attracts the attention of a mysterious and relentless stranger who seems determined to hunt him down. With time running out and danger closing in, Shaun races against the clock to uncover the truth about the woman's death and his own involvement in the tragedy. The closer he gets to the truth, the more perilous his journey becomes, forcing him to confront harsh realities about trust, redemption, and survival.